Nice rig ... saw your other thread, achieving 39mph at WOT, though RPM's are low. As others mentioned you should be getting 5000-6000rpm, though youre not far off considering full of fuel, etc.
A q for you - does your boat still have a capacity plate sticker ? what are the numbers on it - - the sticker on my '98 268 is gone. She's getting re-powered right now.. thought i'd inquire..
cheers.