nodsocket I am thinking about something similar. There are a couple of ways to install and update apps from Play Store in a different user profile:
Run Play Store in the Owner profile, GOS has a feature to install apps from the Owner profile to other user profiles. Also, you can optionally disable apps in the Owner profile if you're only going to use them in other profiles and not the Owner profile.
Another way is the run Play Store in a different secondary user profile and use some app to extract apks to copy them manually to other user profiles and install from apk there.
The first option is the most convenient and straightforward. The second option allows you to avoid running Play Services in the Owner profile 24/7. In both cases when you update apps in one profile via Play Store they will be updated in all user profiles.