AOPA is offering Rusty Pilot Seminars, specifically designed to bring pilots back up to speed when it comes to new rules and equipment. That can be the ground school for a BFR. I would say you want to get that out of the way and build a few hours in the system before trying for the CFI. When ready, I would recommend ATP. They get you all three( CFI, CFII, MEI) in about two weeks. I did it successfully there - and I had not flown for a year before I arrived.

Good luck!