Looks good.
Geissele trigger. If you're hesitant, just get the SSA-E, which is a non-adjustable trigger on the user level. If you like it, and want to upgrade down the road, then you could spend the money on one of the Hi-Speed models (adjustable by the user).
Looks like you've got receivers covered, a barrel, bolt, and gas system. What are you planning for the rest of the rifle? Stock, grip, back up sights (if any), primary optic, etc?...