glastron carlson css 19?

I have the opportunity to buy css19 with merc 192kW for $ 6,500
Is it a good buy for a boat of 1991 years?
still do not know the history of the ship, but I know that one previous owner killed the diver with him. is it a bad karma for the boat?
I very like the line of boat and I can say that it was love at first sight
I found very little information on the net about the boat, and I wonder how much I could achieve the highest speed with the boat and how many horses I need to extract from the engine to achieve this speed?
I have some kind of experience with the renewal of plastic boats, so I set out to complete the restoration of the boat and engine(maybe I put ls1 or build 383 stroker),this is gone be a project boat for me ,my second
I also found a lot of projects on this forum that would give me the answers to questions
I also have the opportunity to buy a Glastron Carlson ski machine and gt 150
All three were very nice to me, but I decided to be a css,becouse I think he can handle more chop and higher speeds
Sorry for the bad English, I'm from europe
please respond and give advice