Re: Help choosing board
At your size, you will need a 144+cm long board. Look at the specs though, its not just about length, its about sirface area. My Murray 140 has more surface area than my Apex 142.
At your ability level, its not going to matter too much which board you get. Stick with a main brand like Hyperlite, Liquid Force, Ronix, CWB, or Byerly. These will last and won't hamper your progression. After you develop some basic skills, you can then ride some friends boards or do some dealer demos and see how different boards ride and see what your personal preference will be.
There is no right or wrong first board. Even a Hydro Slide from walmart would be good to get you out on the water, but you would need to be replacing it much faster once you progress as compared to the "Better" boards.
Yes, get a baord with Molded fins to learn on, and I suggest you try riding with out the bolt in center fins after you get to the point where you are carving heel side and toe side, its another preference, but you have to try it to see if you like it better.