Will 485cc HP make me to top heavy? (5'0/110 lbs). (Photos)

Based on your picture you seem to be a great candidate for a breast augmentation the size you chose looks right for you.
Best wishes!

485 cc implants will certainly make your a D cup if that is what you desire.  The size I would consider a bit on the large side, but not to the point of going overboard.

Unfortunately,
you have not told us your bra size but you look small.  485 cc implants weigh over 1 lb each, will
result in breast descent and will probably not fit.  At size 32 or 34, each 100 cc of implant
corresponds to 1 cup size change.  At
size 36 or 38, each 200 cc of implant corresponds to 1 cup size change.  From this, you can compute the volume required
to achieve your desired goal.  Best Wishes,Gary Horndeski, M.D.