For under 50K a DCB is out unless you can just buy the hull.
If you can find a Mach26 less power I can hook you up with a motor that'll put you right in your MPH range for around 9-10K.
Or if you can find a 99 Daytona like we have....... you might be close to that price range. We got lucky. Most for that price range will have ugly gel coats..but like you said..your willing to take an ugly one and get it all re-done.
29K for the AO sounds pretty good. Even if it doesn't come with a motor..but you said it comes with one that'll run 80. How many hours are on the motor?? What motor is it??? Who built it??? How many hours are on the drive???What kind of drive is it?? When was the last time servicing was done on the motor and drive.
Let me try to think of more boats in that price range.