Never sure why people are so freaked about editing sound. It’s not like anything is going to explode.
Anyway. . . Just make sure everything is at the same frequency. 48, 44.1 whatever. Makes like simple. You can use MP3 especially in STP. How and what are you going to “edit?” Are you just syncing or actually editing the video? STP lets you move clips in subframe amounts, but don’t obsess about it.
Non-linear: all the time and nothing but.