SUNY Cross Registration

I will be attending a SUNY college this fall. I would like to cross-register in another SUNY campus.

SUNY states that I need approval from home and host institutes to take more than 6 credits per semester. How easy is it to take more than 6?
Also, could I obtain a degree from a SUNY college while enrolled in another SUNY college? I’d like a dual degree, but the major I want to dual in isn’t offered at my institute. If it’s possible, I’ll want to transfer some courses from my SUNY college to the other one. What will be the associated fee with the process?

Someone who has knowledge of SUNY cross registration please advise. Thank you.