It's a bit hard to see in the small pics but that definitely looks like a motorboat trailer. You'll usually find some sort of bunk or support in the middle for a keel. The bunks on that trailer look like they're made out of 4x4's instead of 2x4's. I doubt the wood will bend to the correct shape. This is great for a motor boat but I'd think twice about them because they wont conform to the hull. My own boat was on a cradle that had straight beams for support but having something fit like a glove for a trailer helps minimize stress on the curved hull and it can actually make the boat a bit more stable when towing. I was able to notice a difference when my bunks were properly adjusted when towing my Starwind 19.
The other thing that would make me hesitant with this trailer is the fact that there's no tongue extension. A tongue extension allows for easier launching and retrieval at the ramp. By pushing the trailer further into the water will make it easier to float the boat off of it. I've seen Cat 22's launch without issues without a tongue extension but steepness of ramps vary greatly.
The general rule of thumb is that you dont want to push your tow vehicle past the point that the muffler is bubbling in the water. I try to avoid pulling the electrical connectors in the water as it can lead to corrosion. It's usually pretty easy to clean corrosion but just one more thing to have to do.
While that does look like a nice trailer, it may not be worth the effort or expense to modify it
What kind of vehicle do you plan to tow with? I assume you have a swing keel (you should see a crank for it in the cabin)? Is your boat currently in the water?