>MAC pro which is 6 plus years old 32bit
You do know that Premiere Pro CS5 and later are only 64bit?
1 - you decide what is installed
2 - you might see if there is a FAQ at the Cloud forum http://forums.adobe.com/community/creative_cloud
Overall CC is a pretty big improvement over CS6, so I'd ask what issues do you perceive people having?
basically my understanding is that you can have 2 computers with the same program installed.. usually a desktop and a laptop. only one of those is necessary to pay your subscription...as long as the payment for subscription is made there is no problem keeping your subscription current... the ping is to see if your subscription is current... so yes, you have to have some chat between your 2 computers and the current version etc...but it doesnt have to be concurrent... like have laptop or 2nd computer 'constantly' hooked up to internet etc...
this is the main problem with subscription... those who like the cloud with blind folders on their eyes and no clue what its like to work on jobs for months at a time ' in the bush '... will not understand this.