Bull - I run a DHF 2.5WT on a 30mm id rim up front and it's awesome, you will be golden with your rims.
Hepcat/DC - good feedback on the HR II vs Aggressor. My thinking is that for riding in the summer in the Sea to Sky, the lower tread height on the Aggressor shouldn't be a big issue for cornering and braking traction in dry conditions, especially if I went 2.5WT (but then am I gaining anything in rolling resistance over a 2.4 HRII).
I should probably just run a DHR II MaxTerra in the back and forget about it all haha.