Well i would say: EE3 is still wip. So do not use it.
Use Project E instead which seem to be very stable and much further build then EE3...
Also it allow automation...
well, you can't DO much with it, but transforming items, but I would say the code of the mod is not WIP at all. The code is all there, it's just not used by much right now. i mean, seriously, you can even assign EMC values to items that don't have one by default. it calculates the EMC for items crafted from them if you restart the world, too. the system makes sure there are no dupes, like there were in EE2.(at least as far as i know, it works perfectly, too) I would not call that WIP at all. and who says automation won't come. also, don't complain, you can transmute 8 stacks at once. automation isn't THAT much of an issue.