Hiya hun. id defo go 385, as there is hardly anything between the two.
U wont be massive with 385 but if u go smaller u may be upset. ul look a good full dd i would say.
had 380 cui partials from 30/32aa and now look a full C cup. but i started Completely flat.
im 5ft7″ tall size 8. i wish i could have had bigger.xx