A "sailboat" with a 50 hp outboard that planes ????????
NOT a sailboat in my opinion.
Water ballast ???
Best of luck
Fastest sailboat under power, fastest powerboat under sail. Not good sailing or powering but does have the capability to run and hide when the weather turns. Important for the inexperience sailor. The engine can overpower the sails when you can't figure out how to tack and you're approaching the lee shore.
Ballast is ballast, makes no difference what. The water tanks to take up a lot space relatively, but I can leave my ballast at the dock, tow a single axle with a smallish vehicle (I have a Durango.) At 70MPH I can be in the Keys in a few hours.
For the beginning sailor, I think it's perfect. One foot draft, I never sail in the channel. Anchor where no one else can. If I want to go to the Bahamas I don't have to wait for absolutely good conditions and hope it doesn't get bad crossing the Gulfstream. Just burn 24 Gal and I'm there in 5 hours, refuel, and go sailing.