I’ll go with the McLaren, just because it’s the car I use the most offline. As for timing, I think a 10am start (GMT) would be good.
I’ll add everyone on PSN as soon as I can, and probably host them as well. If for some reason or another my internet is down, or I can’t make it, then I’ll somehow get a message to someone else to host it, but I’m sure I’ll be reliable enough.