The 7 WSM or the 7 SAUM would give you room for play more so than the others you cited. I think the SAUM would be a perfect short action cartridge. It equals the 280 AI and is easy to get along with.
Funny how those two chamberings keep popping up as "best of a lot of world's" solutions yet they're already near (or are) obsolete in factory chamberings. I love the SAUM.