Yes. Run the custom BoP. I don't really care too much if there's a minority that insist on cheating to get an edge and beat me. I'm sure the majority would comply to the regs which will result in some close racing. Could maybe add a rule that people need to record screen capture of setting screen and entering lobby before race, but that sounds like too much admin to weed out a few shady characters...
I think I can trust everyone who has expressed interest to do the right thing, at the end of the day I actually don't expect there to be anyone who would want to actively cheat, however as we've seen in the past, mistakes do happen and people can misinterpret the BOP levels on occasion, so we'd want to rule that out too.
Would everyone like to see tuning enabled as well? I personally don't mind either way between tuning or no tuning. Just keep in mind that if we run tuning, you may need to re enter your setup every single time you return to circuit due to a glitch.
Personally I am a bit time poor these days and would struggle to find the time required to tune and test.
Given its quietly nestled between seasons, we'd be able to have some freedom and pick Saturday/Sunday. If we have multiple rooms with different preferences, can even run one on Saturday, the other on Sunday.