It may sound obvious but here is my take. repositories are labled based
on release or distro for a reason. (dependencies).

I have mint on one of my machines and to be honest, I don't like it. By
no means am I saying don't try it, you may like it a bunch.

I tried Kbuntu about 6mos ago and today give me KDE any day. They say
you can run most KDE applications in the Gnome desktop but I don't see
it. Many of the applications don't run quite as well if one is made for
one desktop it runs best in that desktop. I am sure the same goes for
porting to a different distro but can't guarantee that statement. Try
Mint and then add what you will after you are sure you like it. I would
devote some hard drive to Mint and make sure when installing it under
advanced you don't install the grub with the installer unless you don't
want to be able to remove it without learning how.