Don't buy anything more than 10 years old for your first boat, and if it's close to a decade be careful, there were some pretty crap ass designs out there. Any river runner will be good, Burn, Remix, Mamba, Diesel, Hero, Fun... any of these will serve you well. At your size you will probably want to go with a medium on any and all of them.
My first boat was a Wavesport XXX. I could barely fit in it and I got my ass kicked. Made me want to give it up. Bought it because it was a great deal.... the happiest day of my boating career was the day I got rid of that piece of shit.
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