Hello all. I'm about 6'0" tall and weigh about 240. I should be down around 220 by summer. My bike is a GT I-Drive 3.0 and it's time to upgrade the fork. I'm looking at a 2005 Fox RLT that has 80mm of travel; it is an air shock. I ride almost exclusively XC. Will this fork do the trick? Is there any reason to spend more money for a 100mm fork?