Beginneer getting started, some advice please :)

Hi guys, I've been wanting to surf for a long time now. And this summer is going to be the summer I buy a board and have at it. I'm 129lbs and 5'9 & from what I see from the stickies is that I should go for a board thats around 6'2-6'4 with 18-19.2 width. I want to start of with a shortboard because I don't want to have to go back and buy a shortboard later on after I've learned the bascis
So the questions are, what is the absolute smallest I should go. What are some good places to order from and what brand? I'm not really into the label right now since I'm just starting out. I just want something average for my phsyic. And where are some good local places or online shops to browse around at? I'm in southern cali in the Orange County area btw. Please feel free to post links of what you think would be best for me & why. Like I said I want to start shortboard and I'm sticking too it
Thanks a lot for the future help 

So the questions are, what is the absolute smallest I should go. What are some good places to order from and what brand? I'm not really into the label right now since I'm just starting out. I just want something average for my phsyic. And where are some good local places or online shops to browse around at? I'm in southern cali in the Orange County area btw. Please feel free to post links of what you think would be best for me & why. Like I said I want to start shortboard and I'm sticking too it

