With boots it's not about the price as much as it's about how they fit. If those were the one's that are comfortable on your feet than that's what i'd get.
In terms of boards yes you will need a wide board with 12/13 feet. Boards I'd look at for you are the Rome Manual and Flag. I also can recomend the Ride Decade wide. Look for last years on these too and you should be able to get away with a nice board for a good deal.