Need help with Custom Recovery Installation!

Hi, I have been trying to install cyanogen mod for my Samsung Galaxy Mini S3 to bring it up to 6.0.0 (so I can play pokemon Go xD) and I can't seem to get any Custom Recovery to work! Whenever I boot it into recovery after installing with Odin. It just keeps restarting my phone? Any help please? Also if anyone could give me SuperSU rooting guides for my phone, instead of Kingo and King root, thanks!

Phone: Samsung Galaxy SIII Mini (I8200N)