Remember the top mounting holes will be 2" below the top of the bracket, take that into consideration. As a FYI when we installed my brother's bracket, which was for a 25" shaft, we installed it with the top mounting holes 29" above the keel. That would make the top of the mounting plate 31". We went with the formula that every foot the engine is away from the transom we raised it 1".....plus one more for good measure.
. The front of the engine is almost 3' away from the drain plug at the base of the transom, it's a 27" deep bracket and just under a foot to the engine in the vertical/square trim. . Good luck, gonna be a sweet combination.