I was looking for a bike (for a beginner) for exercise purposes. I have been to my local bike shop, and they showed me a cruiser and a hybrid. Both seem a little too bubble-gum for what I'm interested in.

I've been heavily considering the Trek FX 7.3 WSD, but I'm nervous about making that kind of purchase. First, I haven't ever ridden a bike bent over like that. Second, the thin tires, I'm worried about them not being able to handle the rural roads where I live. Lastly, I'm concerned that I should really be getting the cruiser/hybrid, but I'll out grow it quickly.

What do you all think? Thanks in advance!