peddroelm: very weird race choices you propose :) ..
We're talking about characters that will achieve 125 STR with 40+ gear .. Caliban is available in Arnika ..
Carry capacity will never be an issue on this guys. Especially not at character creation ..Carry Capacity = Floor((STR*2.4+VIT*1.2)*RaceCarryMod)
Out of combat stamina regeneration formula might depend on maximum stamina amount Round ((STR+VIT+PIE) * (0.7 + (level-1)*0.033)) .
125 STR will help with that too.
In combat you replenish stamina via the stamina spell (very efficient ) .. and by also using weapons (much more stamina efficient than using instruments..) or potions of stamina, pickme up or restoration
Out of combat - make them female and that takes care of out of combat stamina regen issues if you don't care about waiting a bit between fights (stamina regenerates quickly out of combat anyway) ..
And this is why felpurrs & hobbits make great bards and engineers to me . High initiative and ability to max DEX, STR quickly .. Mooks and GNOMES have decent stats EXCEPT for abysmal staring SPD that lowers their viability in my book .
I consider piety a dump stat on all professions but especially on Bard and Engineer .
Of course, my analysis *does* make an assumption; namely, that the player considers Stamina more important than anything else; a player who considers it important, but not *that* important will make a different choice (as I mentioned, Mook is actually a decent choice here, and I believe Hobbit is as well), and someone who ignores that stat entirely (not recommended for a Stamina caster or for anyone who plans to use heavy weapons) might make a different choice. I noticed that, for example, Lizardmen get more carrying capacity but less stamina at the start than other choices I've listed, but this is without accounting for the negative bonus (-20 for Gadgeteer).
One other thing to consider when it comes to STR boosts from equipment is what else could go in those slots. In particular, a Bard with two Rings of the Road and Caliban's Cuirass has no room for stamins regen. I also note that Caliban's Cuirass weighs 14, which might not be ideal if you are trying to minimize load (compare to 3 for the Robe of Rejuvenation. Also, you might want to spend an accessory slot on an Amulet of Healing (+3 AC, health regen), or on a Stamina regen accessory. Note that this choice might change as the game progresses; you might want to use Caliban's Cuirass until you get the Robe, at which point switch out that Necklace of Endurance for another +20 STR accessory.
Of course, the analysis above assumes you are ignoring Power Strike for this character.
One more thing I would like to point out: Carrying Capacity is a team effort. Due to the way load is automatically spread between characters, getting more CC on one character benefits the whole party, and because I want to try to avoid encumbrance on this playthrough, I am going to give everyone but the Bishop (and the mage-to-be-replaced) high STR. Also, giving heavy armor to some characters will eventually hurt the entire party; hence why I will likely be sticking to light or no armor for my Fighter and Valkyrie, at least.
By the way, regarding PIE, in the case of a Priest who will later be replaced, it makes sense to boost the Priest's PIE. At lower levels, it makes a big difference in the amount of spell points you get (which can give you higher level Armorplate for Arnika Road, for example), and this character will not see high levels due to being replaced.
One of the nice things about this game is the sheer number of different viable strategies; that's one reason the game is so replayable!