You're in luck! I have some links for you.

https://www.dual-boxing.com/threads/...highlight=comp
https://www.dual-boxing.com/threads/...highlight=comp
https://www.dual-boxing.com/threads/...highlight=comp
https://www.dual-boxing.com/threads/...highlight=comp

I'd post some links to the threads about classic group suggestions and plans but there are 64 results in this forum for a search on "group," with 17 of those just in the last two weeks.

Good luck in your research! These threads are adding up fast for classic and we still have almost a month to go!