It's about 1,700 nmi. one way as I recall. I forgot that we left the boat in Sea Island, GA, on the way back so we could return for Christmas so deduct about 400 nmi. That gives about 3,000 nmi total. We went outside and on plane most of the way. The 150 hours were from the engine Hobbs meters. That gives an average speed of 20 kts. which seems high, but we can go faster. At that stage with newer engines we topped out at a bit more than 23 kts. with full fuel and water, six persons on board, faster as fuel burns off. I do remember running flat out ahead of a hurricane into Chesapeake Bay.
The biggest problem is that the fuel tanks after repower do not get any bigger so the faster you go the shorter the boat's range. I did have a 200 gallon fuel bladder across the stern which was reassuring but a royal pain to move fuel into the tanks.