Glibness (via Wish), 20 Charisma and Expertise in Persuasion allows you at least a 32 (sometimes up to 37) Persuasion Roll. A roll of 30 allows you to do the 'Nearly Impossible'. So you can reliably do the nearly impossible persuasive things.
If you toss on Charisma's above 20, Guidance, Eagle's Splendor (from a hireling), wearing Glamerweave, you can raise that result into the 40s fairly reliably. That should allow you to do pretty much anything that is even remotely possible with persuasion, and convincing someone to follow you should fit into that description.