Don't use a RAMdisk, rather buy a modern SSE (m.2 prefered). The difference between a RAMdisk and a m2 SSD are fairly slim, considering a lot of the games files go through the GPU as well (don't play Skyrim without
ENBoost).
And Skyrim SE is very highly recommend nowadays, though some mods have to catch up with the newest version. 99% of crashes in classic Skyrim are because of faulty properties you have to fix through TES5EDIT (basically make your own patches).
The SE version runs much better than original Skyrim, plus the esl feature of the updated creation engine that came with SE is pretty awesome, theres not much need fix as many things through TES5EDIT and most problems can be fixed through smashing (if you want to play for days without crashing) and not through manual edits and finetuning anything. Absolutely get SE when its on high discount.