Hello Keith,
You might want to refer to the below links:
1) About Workstation silent installation:
Install APM in Silent Mode - CA Application Performance Management - 10.7 - CA Technologies Documentation
2) About patching the workstation instance, you will have to find a way to automate the installation of latest hotfixes
Announcing the availability of CA APM 10.7 SP2 - CA Application Performance Management - 10.7 - CA Technologies Document…
Fyi, we have recently enhance the Hotfix (HF) mechanism so you can now pass the EM or Workstation home directory as an argument, hopefully this will help you automate the installation.
Installing APM Hotfixes in a custom directory - CA Knowledge
Another enhancement for HF is that the installation process takes few seconds compare to 30 or 40 minutes like in the past. Here is a KB with the list of all 10.7 HF, as of today, our latest 10.7 hotfix is #25
APM 10.7.0 Hotfixes - CA Knowledge
3) Recent changes in Java licensing by Oracle is documented here:
APM Oracle Java FAQ - CA Knowledge
I hope this helps,
Sergio