I'm sure the rims are more than sufficient. I used to ride a hybrid (of lower quality than the trek too!) when I weighed more than you and your gear, and the wheels held up to severe punishment on my teenaged riding habits... the wheels were built up from generic alumnium rims. The best thing you can do now if you have your bike and gear is to do a shake-down trip. It'll answer all your questions. (assuming the bike is mechanically sound)