Re: integration - I only saw Abram's Trek once, but I don't recall any non-humans on board the Enterprize aside from Spock, but I could be wrong. Certainly there weren't any on the bridge crew. Even if there were, it's still pretty obvious that both Starfleet Academy and the crew of the Enterprise were 80-90% or more human.
I think that at the time period when the Federation is just getting started (around the time period you're talking about) that homogenous ship crews would be fairly common since most of the members of the Federation would have had their own fleets prior to entry, I would think. Think of it in terms that the shows present themselves; Spock is the first and only Vulcan in Star Fleet, in both TOS and the movie. In TNG, Worf was the first and only Klingon. Someone always has to be first, and there will always be a time before a fully integrated crew would exist on every ship. Ascribing that thinking to racism is stupid and counterproductive.
It would sorta be like a NATO military unit that was composed of a mix of nationalities, rather than 99% from one nation with 1% observers, maybe. If nothing else, communications problems would preclude such a mix early-on.
You are, of course, free to do as you see fit, I'm just throwing out my Cr.02.