I’m starting to roll out ZSM 7.01 HP4 and have almost all my apps
tested and tweaked and sent to my first site, locally of course.

I currently have three distributions based on functions, "Images", "MSI",

A concern I have is each of these distributions are relatively large and
adding new apps to any of the distributions will cause them to rebuild at
some point and send the whole distribution, 5 gigs to 50 sites over
1.5MB-10MB links?? Should I be using more distributions so that smaller
distributions are rebuilt and sent when needed?