I would look for a club with an interest in racing "A" class yachts. The auxiliary power stops it being a racer, of course, but the size says that an "A" rig would do the job.
Remember Achimedes principal - it will weigh whatever the same as whatever water it displaces - when done, that is going to be a HEAVY boat, and, without assistance, might want you to join it in the pond when you launch it.
