Al told me his boat is 12,500 wich sounds right with the big blocks. Small blocks in that boat will definitely have to work harder to get on plane so it's a legitimate concern, but a sea trial will expose any problems with performance. FWIW, Al's boat planes well but needs the tabs to lift the stern efficiently.
By the way- his boat will walk away from my 34 Silverton with 270 HP (small block) Crusaders. My boat weighs about the same as Al's. Hope that helps...