vCenter Operations Manager for Horizon (with View)

I'd like to try out Operations Manager for Horizon View, but I need some clarification and a little help.

1) What do I need for the setup?

     What version of Ops Mgr? 5.7.x or will 5.8 work?

2) Do vCenter or ESXi versions matter?

     I'm still on 5.0 U3 for ESXi and for 5.0 for vCenter.

Thanks,

Mike