I'm doubting a bit on your success in completing this challenge for various reasons (despite it being so long lol)
When you add a new league into the database, usually the clubs come along with no players (sometimes no staff aswell) which means you'll have to either make due with regens assigned to you (with their best stats being 10 passing, 10 tackling 9 finishing etc) or free transfers that your low reputation club can do.
You'll be spending 3-4, maybe 6 seasons alone in one Season trying to realistically get crowned Champion in such league (unless you cheat ;))
That being said, I wish you best of luck as I know you'll spend alot of time on this
p.s. RIP CG