Went to the cycle shop today to start shopping for my first real bike. I'm 5'4" in my shoes. I'm looking at the Trek 4300 WSD and the Gary Fisher Marlin GS. The Trek is a 16 and the Gary Fisher a 15.5. Just wondering if those would be the size of bike I would most likely need? I'm going to go back and ride them but I wanted to see what other shorter riders rode. I should add that I'm about a 30 inch inseam.