Windows 10 is the choice. But its still not good. After every windows update you will run into some new stupid complication. If i were you i'd try to split up the cards on two rigs, keeping each rig either Nvidia or AMD. Your downtime with stupid problems would be cut in half. If not more.
After that I'm definitely switching off to Linux. The downside is that it requires an extra mobo and everything, which I won't be able to afford for like the next month or two. Already spent the free and unused money, need time to earn more of that.