Server 2012 RDS - User Profile Disks

Hello,

I'm implementing Server 2012 RDS session-based.

1. Can I increase the limit of User Profile Disk after it is initially set?
2. Is it ok that my Admin user has a User Profile Disk i.e. no local profile on the server as they did previously.
3. Are PSTs supported on User Profile Disks - previously PSTs were unsupported on network share - User Profile Disks are on network share.
4. I had an issue where a UPD was created for a user - I then delete the UPD. I then logged in as the user (a domain admin) and expected a local profile to be created - this didn't happen. A temporary profile was created instead. This was unexpected.