Here's a simple way to handle it...
Dave...
You're in charge of all competition related things...
Come up with 4 BJCP categories, and 4 non-BJCP categories. Run them on an alternating roughly 6 week cycle per RB and Dean's suggestions... (with maybe December (or Mid-Dec to Mid-Jan) off so your 8 competitions are spread across the remaining 48 brewing weeks.)
Let us know what the plan is for the next year, we'll all say aye.
In a year from now, if you've done a shite job, we'll fire you, but most likely we'll all just suck you in to doing it for one more year!
JQ