Hi!
Here are my two cents, for what they're worth...
I'd wait at least 2 years under HRT before doing BA, because there's a good chance that your natural breasts will keep growing along that timespan (it has clearly been the case for me). How long one has to be under HRT is not that relevant before FFS.
In my opinion, for passing and relieving dysphoria, FFS is much more of a priority than BA. There are many cis women with flat chests and no one pays attention, but a masculine face on a woman, on the other hand, tends to get much more second looks.
In my case, I did FFS + tummy tuck + hip liposculpture after 1 year under full dose HRT. Together with a hair transplant and laser+electrolysis, this allowed me to achieve passability ASAP (including using a swimsuit on the beach without getting awkward second looks). Just 2,5 months from now (which will be after 2 years and 1 month under HRT) I'll be undergoing SRS and BA during the same intervention.
And I'm happy... [emoji4]
Warm hugs, Sarah
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