I just sold my Velocity 280 to a guy in canada, but it wasn't what you wanted anyway, (single HP500). Where are you going to store your new boat when you get it?
We live on Merritt Island, off Sykes Creek, where we keep out 35' Nordic on the lift. I don't know of any other boats in Brevard Co. that fit your requirements, but hopefully you can find something in the S. FL. Boat trader, or boatraderonline.com, or here in the classifieds. That's where I would look if I were in the market.
When you get your boat, let me know, we get together and do some boating.