I'm 6' tall, but pretty light, and used to small bikes. (bmx cruiser, giant STP) Do you think the 15" frame will be too small? I could care less about the seat height, I just worry about the top tube length.... I might score an '05 in perfect shape for about $900. Should I seriously consider it, or should I keep looking? I just need a bike for whistler once a year, and falls city once in a while.