Without the F-18 connection, the dates become flexible. Here's a suggestion:
The Dunedin group has one of its biggest events in late October. It is a distance race called the Barton Memorial. In recent years it has expanded to include a banquet on Friday night, setup and fun racing on Saturday (post-party recovery day) and then the distance race on Sunday.
Perhaps TBCS would welcome your 2 day race on that schecule so they can use the existing Barton logistics (RC, chase boats, etc.) rather than an all new race. You could do bouys on Saturday and distance on Sunday. This way you get a banquet included! We have Fall season wind by then and a good turnout for the Barton. Could be a great time!