Maybe I can use the « general admin » to grant and remove admin status to my main account, as needed?
Hm, honestly that sounds like more hassle & confusion than just having two stable user accounts (admin & normal) with consistent permissions and notifications.
By the time your forum goes live, you should find “admin powers” are like having all the keys to the building, not being a bull in a china shop.
The only potential issue I see here is that I coooouuuld post a topic without required tags – but I created these & know them well. (And my admin account does not let me use category-specific tags in a wrong category. If this was once possible, I guess it’s been addressed..?)