With a 300 cc size increase, you should certainly see a visible size change - I'd expect you to measure about a cup and a half large than you were pre-op.
And yes, as the tissues relax, they will "round out" more. This may take a few months. Hang in there.
Hello,
If rippling is a problem switching to silicone gel can help reduce it, but going bigger will probably move you in the other direction. You need to figure out your priorities and get a few opinions first. A lift might be in order.
Best...
It looks as though the inframammary folds have been elevated by overdissection of the lower pockets. This will probably need to be repaired surgically with a post-operative need to wear an underwire bra to protect the repair for a while.
Fat grafting may help but this tends to be...