First thing is moving the email. Buy a domain, buy a FastMail subscription and start using it. Migrate all the main accounts to this new email: gov accounts, main service providers and anyone that might have emailed me in the recent history. This takes a while, but in a week you should cover at least 70% of what you really care about. The rest, I just update as it goes, you can redirect your gmail to a specific FastMail folder and change the stuff as you go.
Calendar I use FastMail too.
Storage and photo took me a while to find as solution I was happy with, but I settled with OneDrive. There are lots of similar solutions, you have to find one that works best for you. For self-hosted Resilio worked very well, and I still use it for backup.
Docs I use LibreOffice in my OneDrive.