DerHexer66: You can just leave your base alone without having any disadvantages. Grab your food and maybe some building materials and buy a house at "The Hub" or in "Squin" (if you're not enemy of the Shek Kingdom). Then recover there until all your wounds are fully healed.
Honved2016: Thanks for the advice about deserting my base for a while; I checked up on it and it appears that it should be safe in my absence, odd as that seems in that unforgiving world.
On the other hand, I'm quite well aware of the possibilities of buying a house in town, and even stated in my previous post that I did so before attempting to build my own base.
Unfortunately, I was not aware at the time that my deserted base would be safe in my absence. Retreating to town and recovering would have made a huge difference. Staying to defend it resulted in my party being pretty well wrecked by Swamp Ninjas (we won, but barely), followed immediately by a large group of Starving Bandits (while I was still bandaging from the fight, leaving only 2 members left standing at the end, both in really bad shape), and then a major assault by 18 Dust Bandits, all within the same in-game day. I could deal with any one of those attacks, but three back-to-back with practically no time to heal, and then left for dead with predators eating the bodies, resulted in me giving up and starting over with a better idea of what I need to do next time.
A smaller but significantly better trained party wouldn't have run out of food as quickly (the local towns couldn't reliably supply my 12 people, and I didn't get a break from fighting long enough to grow any food). A training dummy on the roof in town would have allowed for better Attack skills, rather than spending the first 30-40 days and dozens of fights just trying to bring the party up to a mere 10-15 skill (which i could have reached by training, and THEN fight). Also, I clearly need to stockpile a LOT more food before venturing out, so I don't send a couple of runners back to The Hub and Squin, and find barely enough food for sale to feed the runners, much less anything to bring back. It's easier to plan ahead when you have some idea in advance of what situations you're planning for.
I like the chosen location, however. The spot I picked was on the gradual slopes just north of The Swamp and east of the river, which is just east of the limits of Shek control, so it's within the jurisdiction of the Holy Nation. I built a short distance due East of a large copper deposit, with a large Iron deposit within the eastern edge of the area I'm claiming. I've got 100% Arid and 10% "normal" growing conditions for most of the base, and both Swamp and Arid overlapping at 100% within the southern end, so I can eventually grow both Wheatstraw/Cactus and Riceweed/Hemp inside the intended enclosure. Iron will be inside, copper only a short walk outside, a Well at 100% toward the southern end, and wind conditions ideal for Small Wind Generators at full efficiency in the northern sections.
Hopefully, Swamp Raptors won't venture up the slope into the dry half of the base until I've got it walled in and defended with turrets, at which time I'll plant my Riceweed and Hemp.
This has been quite a learning experience.
All i can tell is: a good (lost) beating without bleeding out to death will make you just stronger (toughness). You can train on those training dummies to increase your attack, but that won't help for defense, toughness or anything else.
The longer you're taking hits without going down, the more toughness and fighing skills you'll gain - samurai or crab armor recommended (but not for ranged attacks!).
I also recommend to get a backpack for training, that will give you a lot of penalties (- xx on attack/defense) as this will make your opponent stronger compared to your char, thus gaining more XP in the fight.
1* Samurai armor: UC cities/Shek kingdom armor vendor or "armor king" for high quality ones
2* Crab armor: hard to get, needs crab raider looting or being allied with them
3* skip booth of their boots, get some wodden sandals for attack speed bonus instead
You won't gain much XP if you have 10 people in a squad fighting a single, heavily wounded dust bandit. To train your chars, it's better to kidnap a dustbandit (or any other hostile villain), patch him up and put him into a bed if he's ko. If he's not k.o and getting up before fully recovered, knock him out and put him into a bed again.
Also give him some decent armor and a crappy weapon - give your char also a crappy weapon, preferably a katana class if you're lacking dexterity, else any weapon you want to train for later on.
The less damage both of you do, the more XP gain, because of more hits are dealt, before going ko.
Your DEX should be 50+ at the very least. The more, the better, it's affecting attack and blocking speed.
Make sure your other characters, not involved into that training, are on "passive" and "hold", then fight that villain 1on1.
He will as well get stronger, that's a plus. But you need to make sure he can't escape.
To do that have the villain and your training char in a building and build (no need to complete, the frame is enough) a bed right in front of the doorframe. This will break the pathing and the foe can't escape if he wakes up and want's to run away.
Put him in a cage before you quit the game, else he might be gone on a reload.
Your base is in a spot which is pretty popular because of arid AND green fertility and massive amounts of water. Copper isn't needed that much, so you're good with the iron for building and crafting.
To make your base entrance more save, you can make sure the foes have to go through the water to reach your gate. This will slow them down and you can get some ranged hits on them before they can wreck havoc on your gate.
Swamp raptors will show up at some time and try to eat your crops. It's just another opportunity to train your chars (excellent for turret training).