Questions about installing macOS on a new SSD

I have a MSI H97I AC motherboard and plan to try installing macOS on it. It already has 1 SSD and 1 HDD in it. Does anyone know if I can put a third one in? If so, I would install it on the 3rd. Do I install Clover on it and boot into it at PC start so that I can choose between Windows 10 and macOS? New to this topic, I hope you can help. Thanks!

Author: @jamescosmos