both aa & ua have 1 way awards iirc...

next spring might include both low & high award seasons...

do you have specific dates for the flights needed?....if not, look at the 2 sites so you know when the mi's required for the awards change...

if you have to buy flights, you probably would want to be the pax...

does a cap1 award book into a mi earning fare class?

good luck...

edit to add....i wouldn't book any 1 ways unless i had both out and back available...does your spring include may?