Hi Rondo, welcome right back at ya!
Sadly we don't have a place where all completed hacks are stored, I believe. D: The closest you'll get to finished hacks is the Hacks Showcase section located in the Emulation board. The best complete hacks are a matter of opinion though; you can always try creating a discussion on that in the ROM Hacking Discussions thread? I'm sure people will contribute since many members are interested in hacks here and have played through a lot of them! Can always use the ROM Hacking Simple Questions for any help you might need with hacking, as well.
Good luckkk! Feel free to private message me if you need more help! Gonna quickly close this now since it's more of a hacking questions than an introduction, but that's totally fine, no worries. It happens. ^~^