ok so im having FFS in April 29th and wont finish school till setp. i m still going to dress as mail until i finish then. do you think i should get a small BA like B cup so i could hide them or should i just wait 16 months to get BA? im not sure if people can really notice a B cup.

I'm not sure that you can hide a BA, even to a small B-cup.

I say, just go for it all. Get the BA you want to get.

I already see cleavage in your avatar.  But even if that isn't real, a B cup is a fairly small implant.  I'd wait until you can be whoever you want to be and size won't be an issue.  Then you can decide if a B cup is truly right for you.