Disclaimer: if this is how you like to play that is okay.
I find it so confusing that people are asking for specific builds with what spells to take and what items to equip. Although it’s a singleplayer game with a difficulty that doesn’t require much optimization (if any) even on tactician. I really enjoy trying different builds that seem fun regardless if they are the strongest or not, so to me following a build would take out half the fun of the game.