My 2nd boat was a '90 Celebrity 180. When the owners of Celebrity boats sold out one started Crownline and the other Mariah. So that Crown is almost identical to my Celebrity and I'd probably advise to get one w/4.3 which is what my Celebrity had in it. But a test drive is the best way to determine if it has enough power and that is somewhat subjective. In the end the only opinion that matters is yours.
Don't listen to the comments that anything w/3.0 is underpowered. I picked up a '89 SeaRay 160 this spring with a 3.0. It's the second boat I'v owned w/3.0. If the first one was that underpowered do you think I would have bought another one? It hardly knows a tube is behind it & will pull someone up on 2 skis like nothing. It's pulling up a 200 lb guy doing a deep water start on a slalom ski that a 3.0 starts to struggle. Tubes, knee boards, wake boards, non slalom water skiers, and other inflatables are effortlessly towed with a properly propped (19P High Five) 3.0 in the right boat.
