Beginner Board

I know there are forums for this but i wanted to be specific. I am 15, 6ft,190, and pretty little surf experience. I just moved to galveston,tx and idk if you guys know but the surf here is pretty lame. I live .5 miles from the beach and i can't drive but only walk or bike and i was wondering if i could buy a short board? It would be great to have that instead of a fun board because of the distance and they have a ton of used ones here (was looking at this http://houston.craigslist.org/spo/2727568249.html ) I have a 500 limit and NEED A WETSUIT, so make it 400. Recommendations and advice please!!! Thanks guys and i am dedicated, will go as much as i can which will be pretty much whenever it is surf able!