wow. no offense, but some wrong advice. check out
www.implantinfo.com.
in short: if you are considering lifting hard after a ba (breast augmentation), then you are limited to only above the muscle. again, depends on how hard you'll continue working out, but judging from your pic, hard for you means really fucking hard.
if you don't want them to stick out like missiles, then do NOT get high-profile implants (which are most doctors' first choice). you can visit the website of mentor and mcghan to research the exact specifications of their saline implants (smooth or textured), measure your current chest, etc. approach this mathmatically, not based on what one or two other people did.
also, you WILL find that 90% of all redo's (2nd, 3rd ba's) were done b/c the ladies wanted to go larger. keeping that in mind, pick the size you want (i.e. C), and then get a half to full size bigger (i.e., large C to regular D).
i've met chyna and her boobs are not very nice. they're good, considering all that she does (wrestling, lifting, porn), but you could do a lot better.
incision site: nipple; don't do otherwise.
as for down time. it cannot be stressed more: take plenty of time off! if you don't, you jeapardize screwing up the implants. you should take a minimum of 1 week off from the gym, 2-4 weeks off from upper body, and 4-8 weeks off from chest or lats.
good luck.