I think your idea is a great one! Doing rescues and adoptions of animals that are no longer wanted or mistreated is quite a job to undertake but from what you wrote in your post it sounds like your plans are going in the right direction
Doing such a project alone I think is an overwhelming task, to organize a group of people to do this together sounds like a smart idea to me.
I personally don't have any experience with rescues but some members here do and can give you more specific advice.
Good luck with your project