I will be installing Trend Micro Antivirus agents, as well as uninstalling the older version.
It has a firewall component which does knock out the network connection at a point during the uninstall and the install.

I am not at all familiar with packaging the apps, I really like the idea of the schedule task for installs though.

I really have no reason for installing through KIX32, only that was the way the previous admin was rolling out Google Chrome installs, which was not working properly :).
I am still trying to piece together the old login scripts and I am looking to start from scratch.
Only using them for Drive Mapping, Printers, Default Browser, and I am sure they will become more complicated as I make my way through the mess.

Still learning as I go though. (I am really liking the idea of the schedule task though.)
I have been looking at alternatives for deploying updates for applications though.
Like ninite pro or puppet.