Guys Help me buy a stable motherboard for my 1080ti's

So I’m buying 2-3 MSI GeForce GTX 1080 Ti next week for zcash mining.I’m new to mining and it’s not very popular in my country.

I’ll buy hardware’s from local store as online shopping is not available here,so my options are limited.Please help me choose a motherboard from the images I provided that supports 6-8 gpu and can run 1080ti’s long term.