I think you need to decide what you're going to do. A few posts ago your plan was to finish your home built hull. Now you're looking at a new hull.

If you're going to finish your own hull, to run as a fun boat, or perhaps to get started in racing, a decent engine and hardware, perhaps even second hand, will do just fine. However, if you're going to spend the money on a new Microburst, Twincraft, Seaducer, or other well known racing hull, then the best bet for success is to buy the hardware specified by the manufacturer, and install it exactly as they say. I can assure you that the new hull route is going to cost significantly more than finishing up your home built hull. However, if you setup the new hull the way it's supposed to be, it'll be fast and stable from the start. Get where I'm going with this?