John,
Whoops on the 150hp 4-strokes, make it a pair of 140's LOL. The link you posted to the 23' Regulator doesn't seem to be working, I'd love to see the boat. I love my Scout, but if money wasn't an issue i'd have that Regulator in my driveway....
BTW: whichever company offers up the 150-175 4-strokes first is going to make a killing......