I initially wanted FC/V-line for very similar reasons. I decided against it because of possible future complications.
Something to consider for all surgeries but especially FC is maintenance. From what I’ve seen on TPF many who’ve gotten FC/v-line in the past are now going back for facelifts. FC and general facelifts are not one and done procedures. Facelifts last ~10-15 years, so if you’re going to get FC in your 20’s, expect needing a facelift in your 30s, 40s, 50s and so on.