31 is an excellent choice. Probably the best in the state for a fun hunt, lots of elk and the opportunity for a good bull. Long draw odds though. You could be chasing that tag another 10-15 years.
There are always trade-offs, the main ones being, success, draw odds, private land issues, trophy quality, terrain, grizzlies. It really comes down to which you are most willing to compromise on and which you are not.