I'm actually building a similar deck to this. Main difference is that I have
Rebbec, Architect of Ascension and
Reyhan, Last of the Abzan as the commanders and I focus on the +1/+1 counters a bit more. Overall the entire deck is artificers that make golems, Strong golems with potent effects and lots of artifact plays. Overall your deck isn't bad starting off. Perhaps you could add some more recursion such as with
Epitaph Golem and
Glissa the traitor.