If its truly a Biesemeyer, It would be worth the effort.
Build it the way you want it, not settling on a 455 G/E combo like a lot of 21's have.
This hull is similar to my 21 eliminator, and takes the chop of the big lakes well. (Lake Mead/Mohave)
Is it a 4 stringer hull? Is the bottom straight? That BBF/Berk combo will be a good set-up for that hull.
You might find a better project in AZ/Socal.
Good luck.
Dan'l