I think your limiting factor is probably your boat, although I have no experience behind your boat specifically. Most direct drives are going to have a small to maybe medium wake at best. The smaller the wake, the larger the board should be. The larger the board, the less manueverable the board. Which tends to be less fun and you may get bored faster. See the problem?
You probably want to limit your options to larger, small wake friendly boards. You could look at the larger boards in the bigger lines such as Inland Surfer, Shred Stixx, Walker, etc. Maybe some people with experience on those board will chime in.