A: Yes and Yes!
DSR management is included:
+ You will have a privacy portal (form) where users can request their data. This form can be easily customized too.

+ Dashboard with requests.

+ Automate user's request via email

The only thing that's not included is connecting to data sources to delete automatically user's data.

To integrate via GTM in the best way with google consent mode here is a link explaining how to do it: https://illow.freshdesk.com/en/support/solutions/articles/73000564118-how-to-install-the-banner-with-gtm-google-tag-manager-