Number's wise, it's not that terrible, but you have to steel yourself that a lot of your turns will be consisting of Boost-Strike and nothing else.
For Archetyping i'd look at either Bard to get an additional buff cantrip later on (one that can benefit the whole group, or that you can pair with Boost as well if your Eidolon doesnt need to move or if you are Hasted), or else look at healing Archetypics like Medic, Herbalist, Blessed one.
From 1st level feats, the skill one isnt bad if you want a bit more skills, synthesis can be used to some extend in exploration activities when you need to borrow your eidolon stats/movement
