SamanthaEve, sounds like you're one of those who can transition without problems. Barefoot Gentile was also a veteran runner before taking up BFR, and had no problems transitioning quickly. Like you said, it's a very individual thing, and the secret is to know one's own body, and listen to it, which you clearly already do. I wouldn't over-think this. If you're already doing decent mileage with Vibrams, then the only realy concern is probably building up the plantar skin, and that's the easiest part.
Thanks BareLee I think that's good advice and need to hear that sometimes...to not over think it and do what I've been doing and listen to my body and adjust accordingly. It is hard sometimes not to get caught up in the whole set program, but I eventually always find myself tweaking a cookie-cutter program to what I can do. Got another BR run in this week and will work on building that plantar skin! Exciting! Have a great running week!