Ok guys, thanks for all comments. I raised Alchemist (what an useless crafter apart from wands and arcanists books) and Culinarian both to lvl 15 so I could finally. Those 2 perks are a must indeed. I could raise a Dye to top quality (around 1580 points) just with them and Steady Hand.

As usual if only I knew it before. Now I will have to rethink all my patters, but it will be worth it.

So I've got WVR, GSM, ALC and CUL. all above lvl 15. What about the others? Would they be needed? My biggest issue is (and honestly was) with the inventory. WVR and GSM were fine, they don't use too much junk. CUL instead is a garbage collector!