Anyone mine with a MSI Z390A Pro?

I am looking to build my 3rd rig, wanted a 6 GPU setup and hear lots of good things about this MB for 6GPU, but, it only has 6 Pcie slots and i like to practice the 80% rule when doing builds but i'm thinking that it will be able to handle x5 1660S and a 2080S rightttt? If anyone else has a 6GPU rig pls share knowledge