So I have an idea.
I currently have a main at around level 90 ish if I can remember correctly. I'm returning to the game for the new leveling experience of choosing which expansion to go through, but I know that if I don't have a 120 character, I'm forced to first level with BFA after the pre-patch releases.
I'm never gonna use a level boost for a legitimate reason, and I received one for buying some expansion at some point. If I used a 120 level boost on a random alt, would I not need to play BFA first when the pre-patch releases? or should I just use a 110 boost on a random alt and get it to 120 through BFA before the pre-patch?