I think, economically-speaking, Musabayev and KazakhCosmos are both in the same boat, and I'm pretty sure we're already partially tied together anyways with the local manufacturing chain, soooo...
[X] Accept KazakhCosmos Assistance (Gain additional political backing in exchange for political interference on future projects.)
The other options involve allying with forces much bigger than us, where we won't have anywhere near the influence like we would with KC.