EastTnRiders.com is also a good site to check out for some local deals that are only a couple hours away. You couldnt pay me to buy a bike from WOW, prices are unreal majority of the time but some people like the thought of purchasing from a dealer and will pay a lot more $$ for that very reason but not me. But i'd have to say CL is your best bet on finding a steal.

I agree with everyone above on the 600 being more then enough bike for you, I'm the exact same height and love my 600. I'd recommend Honda, on my 3rd CBR600 and one had 40k,35k and now my latest i'm up to 16k and never had the slightest issue. And to me they just feel better then any other 600 SS bike i've ever rode. If you lean towards the Honda you should check out 600rr.net you can read for days and also a nice classifieds section.

You can come across some deals on the CBR600RR's right now too with the way the economy is. Keep in mind 03/04 same, 05/06 slight tweaks visually with wee bit more power (barely tell) and inverted forks etc. But if you can find an 07+ they're the ones to snatch up, all new from the ground up and 1,000 times better of a bike in my opinion as i've owned all generations (and I work for a Honda dealer so i'm around them all day). Just saw 2 07's both under 10k in very very good shape go for $3,800 so the deals are out there right now. Sorry for rambling on haha.