I don't travel much either, but do find myself having to go to local places I'm not sure about getting to. Plus, I can get from point A to points B and C. I have trouble getting from B to C without going back to A.

I did some quick adding using the Yahoo prices.
Base GTP: 26,435
CompG: 1,395
Climate: 275
Leather: 795
Navigation: 2,390
TOTAL: 31,290

I'm not sure on the Monsoon. What I do know is this. The navigation system box on the dealer's order system lists the RPO code for the Monsoon. Just like the premium audio group lists the RPO for the radio + the RPO code for the Monsoon. Both are the same code.