I myself have set up a monthly wire transfer from my bank account to Coinbase and a recurring purchase of Bitcoin every 1st day of the month.
That's smart and good for you for committing to buying bitcoin on a regular basis.
Personally I have no way to buy bitcoin with cash from an exchange, because I'm not going thru kyc procedures to do it. However I do have someone I can buy it from when I want to, and it works out well. Don't count me in the club because right now I don't have enough disposable income to keep buying bitcoin, though I would really like to.
Good luck with your club. Not sure if you'll find members here who would really get into it, but you never know.