This is way too overkill. Is anything even loading for you? This would disrupt a lot of web elements. You should definitely rethink this.
How do you mean?
Yeah, I don’t doubt it. You went all in with a couple of them. A balance is what is needed. You don’t necesarily have to value privacy and security over all convenience. And your threat model doesn’t seem so high that this level of potential inconvenience you’re hinting at is warranted.
Do you use Windows or Linux? Do you not use a VPN at all? Are you compartmentalizing your online activities by browsers or browser profiles at least (or do you not need this for your use case)?
For 2FA TOTP - I recommend Ente Auth. They also have a web version where in the worst case you lose all your devices and don’t have latest backups, you can always log into your Ente account and get what you need. But if you find 2FAS works better for you, you do you.
Edit: but besides this, you seem to have taken all the right steps and I see no major concerns.