I've used £425 on ED so far, all in Kickstarter. I'm not counting hardware purchases into this, because that was needed anyway and, besides, I purchased it for running Star Citizen better.
Well, I think a RAM disk is natural when it comes to games like this one. If you can put some or all of the game into RAM before playing then it certainly speed things up! But the game must support it so it's easy to use, also for the non-technical player.
IMO 16GB of RAM is more than enough. 32GB is overkill.
8GB currently is still more than enough for gaming, unless you're doing funky stuff like RAM disks or have 60 applications open at once then another 16BG RAM is not really worth it IMO.
Well, I think a RAM disk is natural when it comes to games like this one. If you can put some or all of the game into RAM before playing then it certainly speed things up! But the game must support it so it's easy to use, also for the non-technical player.