I was a bit skeptical on Gomozoa at first but he has grown on me. I wouldn't cut any.
As far as Galvanic Arc, it is good tech but I think you need to look at it in the context of the other cards we are running.
For killing small creatures, we have meteorites, inferno titan, and obelisk(s). That is 5-6 cards. Obviously it would be nice to have more removal, but that would require more cuts. I think this deck has just enough removal to stall the game long enough to get to Warp.
Pike you listed a lot of permanents that "suck" post warp but I think sphere / capsule are great for 2 reasons. One they are a permanent instead of a spell, so even if you don't want to use them they will improve your next warp. Second they can both help you recover from a bad warp. If you get too few lands you can draw into more.
A warp deck running 4 cultivates and 2 warps is 90% permanents. If you add even two more spells, you will go down to 87%. This makes warp less reliable. You can add captain of the watch / raised by wolves etc. to compensate but there are only a few of these cards in any deck and you are not guaranteed to flip into them. Having good EtB effects is nice but the basic goal of Monk's deck is repeating warp again and again, and a high permanent ratio is key.
Elixir - this is in my list right now, my testing is limited but it hasn't impressed me.
Sculptor - 1/3 of the time I draw this guy after I already cast most of my artifacts and he isn't helpful. 1/3 of the time he makes artifacts cheaper but I am unable to do much with the extra mana. 1/3 of the time he is completely **** awesome and I dump a ton of artifact mana acceleration... although sometimes I run out of gas when this happens.
If we could run 4 ingots and 4 meteorites I probably would and sculptor would be an MVP. As it stands, it can be difficult to utilize the mana savings on the cheaper artifacts and there are only a handful of expensive artifacts. Although my testing is still limited I don't think sculptor is consistently good enough to be worth it.
I might try
Ior Ruin Expedition a try - not a great card but it should help improve consistency, post warp it is better than courier's capsule as it is essentially free, if you are on 7 mana with warp in hand saccing expedition will give you a good chance to warp that turn.