You can still buy the original molded Paramount Boat. There are some considerations though. I assume you're aware that the bottom comes factory fresh with a hook in the bottom. That's what makes it fast but unstable in rough water. But if speed is all you care about, look at the Speedcraft Paramount Boat 21. It's from the original Paramount mold.
https://speedcraftboats.com/photos-%2F-videos
FWIW, the Merc Verado is probably THE most costly engine to run. Maintenance is a nightmare and expensive. For the same hours a 2 stroke G2 is almost $2500. a year cheaper to run and maintain. In a drag race, the G2 will win everytime by a lot vs the Verado and do it cleaner and on less fuel. But the Merc is cheaper which is why you see so many of them. Yamaha is right there with the Merc. Your speed assumptions are pretty much on mark. The boat originally was rated for 225 HP max.