Pixel 8 devices are the only recommended devices that have “minimum 7 years support and hardware memory tagging support”. I’d personally go with an 8 Pro. The GrapheneOS Usage guide can answer most remaining questions.

If you’re going to wipe your phone anyway, may as well start with GrapheneOS and test your banking apps before setting up everything else to see if it will work for you. You can always revert to stock and flash LineageOS instead if they don’t.

PowerToys: productivity utilities like window pinning, window management, accented character typing assistant, color picker, text extractor, etc.