Prop advice for F250 on a 23 CC

[junior11]

I had twin 200 mercury efi's on my 23 seacraft. They sucked down way too much fuel, and the boat was almost too fast. The hull is a 1972, it has been rebuilt and I feel like it probably put on a few lbs during the rebuild

I have bought a yamaha 250 fourstroke to put on the boat. The boat does have a bracket. I have a Yamaha saltwater series 19 pitch prop, but I feel like that is probably too much prop for the operation. Thanks.