This is all already being done.

Andy tried to have an event similar to this 2 years in a row and had to cancel both times due to lack of support.

The Obf does something similar with their qualifyer and 6 man team.

The Canadian Bass Anglers Federation has a carbon copy of this format with their Federation Cup where all the CBAF clubs come together and the top teams/Anglers from each club determine a Championship club, plus the top anglers for the weekend.(It is the CBAF's most looked forward to event by all members). CBAF Priority above all else.... it must be fun!

So there are options out there.
Pete