Gorm Hareth:
Is there somewhere I should look for guidelines on things like starting gear past 1st level, mundane or magical?
Starting gear for level 5 is basically the same as for level 1 in this game, though there's obviously some magic items the party already has that you can claim, or if there are a few things extra you'd like to start with we can hash it out (it's probably fine).
Also, if you want to "swap out" a magic item that's of the same tier we can talk about that too.