Are the Reaper minis the right size and the like to use? Give it a true classic feel to it and all.

Any miniatures would do as long as they're futuristic really. I'm sure their bases would fit right.

I don;t think they would be too much of a problem. From the looks of them they would need to be rebased to fit in with the games board squares though.

If in doubt, rebase in Games Workshop 25mm bases (that's the small ones the infantry goes on)