In the first part everybody need to say what car they prefer, and (vital) how important it is for them that they get it their way (e.g. David saying that he will not participate if we choose f3000 and Peter the opposite). Maybe someone will race either way but still prefer one alternative greatly for some reasonable reason.
I would NOT worry about what decision I might take regarding racing this season.
Ever since Andy retired, I have felt it was also time for me to go. I don't love the F1 Mod and personally have always thought that the F3000 felt far more real to drive and setup. I have only ever driven/ raced with PrestoGP so it would have been very difficult for me to not say yes to a F3000 season; for nostalgic reasons.
Edit: I don't have rF1 or rF2 or any other race sim unless you still consider GTR2 one.