I know of the boat and when I saw it last year it looked in good nicked. And that it would be very fast
My mate has the Ospery XR24, 7.3m with a 225 on the back, and he doesn't have any problems with the hull.
Over-powered boats ey. Well really your main concern shouldbe the transom, extra weight and power will put extra stress on the transom causing it to 'flex' alot more resulting in it cracking. Obviously there are ways of preventing this, like bolting extra brackets through the knee's and / or the deck to the transom.
Also the Suzuki 225, my mates came with one of these with the 2 spark plugs per cylinder. And all he has had is problems with it, so many problems that he has only gone out once this year without the outboard breaking down leaving him strandard. All sorts from the main electrics box, to right now his gearbox is off because the motor was stuck in 'forward'
, to the started motor etc etc etc.
Finally where is the boat because I am over on Saturday so fancy a looksy to see the boat, but doubt I would consider buying it because I can buy a new Pro-sport for the price of that Ospery and a new outboard it would need in a year or so, depending on how bad it was.
Might catch ya over in Donkey land at the weekend