Try the 4'-6" '06 LF Brigade. They discontinued them in '07, but you should be able to find them still for around $250-$300. Everybody on my lake that is about your size rides them and no complaints. They are fast and have a great feel.
Try the yellow loogey. I use the blue because I am 6'-4" and 240lbs. One of my friends that was about your size tried the blue and could not keep it off the back of the boat. The less weight the shorter/smaller the board. Try to find a dealer close by and demo three or four different types for the day. For $450/shot they should let you try it out.