I would think even at $20 K that flat deck isn't priced too bad, depending on condition of the hull. Not the paint itself but structurally as that trailer looks to be about 2 feet too short. Motors look ok on the outside for not having run in 5 years, but I'm sure just the moisture coming in the pipes alone would cause some problems on things.
Pull the motors, fill the transom, set it up as a stagger. Gut the interior and make it a six-pack. Then she's Built for Speed