Since you're planning on getting back into the course I'd say just go for the top. I'm a 15 into 22 skier (34 MPH 53 years old) and I'm on a D3 Quest which is a full on course ski and it's been good to me from 28 MPH on. I'm 180 lbs on a 67 so I'd agree with Cusefan, 69 is probably for you. That being said, I had a Senate for a season before it was stolen, and have nothing bad to say about it, it's a very good ski. Nowadays at our level, any top ski will be a great ski.

I will say, it's always a bit of a strain getting out of the water, but you can't run the course on a wide ski anyways besides which, 34 mph in the course is a lot more work than getting out of the water anyhow.