The Stevens 200 comes in 25-06, .270, 30-06, 7mm Rem mag, and 300 Win mag.

So the WSM's are out.

Personally I would get the 25-06 or the .270. Both of these cartridges are as flat shooting as the 7mm Rem mag and will kill deer out to ranges far exceding the shooting ability of 99% of hunters. They do it with less recoil (not that recoil is a bad thing) and less muzzle blast.