Help need to know if 280 or 325 best on my frame - 5.4inch / 36hips / small rib cage - 34AA cup. (photo)

I'm 34aa and due to go in 4 weeks to have either 280 XL projection or 325 High profile - both natrelle and both my decision but I can't decide !! I am seeing that most women who have the smaller seem to be quite pushed out whilst the 325 are bigger but seem Flatter ??? Any surgeons can help with this ?

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