A lot depends on the builder, the materials used, accessories added and how well its been kept up. I've been building them along with several other models (Toller Boatworks
)I designed for a little over a decade and have boats from coast to coast. I will say a 9.9 on that boat is just going to plow water with a load. Not sure of your location, but if you are up in Mass I'd be leery of that boat, the guy posted up on craigslist trying to sell it saying I was the builder and it wasn't one of my boats and used a picture from my site of one of my boats on the water
Didn't have the balls to return my call but ended up editing the ad then removing entirely.
A good friend will bail you out of jail...A TRUE friend will say, "Damn that was fun!"