I suggest you should have Jeremy Soule compose at least one piece of music for the game. He's been writing music for this kind of RTS since TA through SC. I know you got your own composer and thats fine, but hire him to write a piece for the intro, credit or something.
Only if he'll do it for free. If not, he'd probably be pretty expensive. That would be a real waste of a stretch goal. The current Music Commander does an excellent job, frankly I like the pitch video theme better than most of what Soule has put out recently.
Howard Mostrom is doing the music. My favorite work of his is the music from Demigod, (still one of my favorite games... I'm sad that it's so inactive now...). He's got good stuff, don't worry Play Demigod a bit and listen to the music, it's pretty awesome. I especially love how it gradually picks up as the battle gets more intense. One of Demigod's many subtle bits of polish that I think put it a cut above a lot of other games.