Jason,
There is a TON of information on this site, and the 2.0
PhalloBoards site. Grab a bowl of popcorn and pull up to the laptop and start reading.
For fillers the only things I would look at are
Permanent:
PMMA
Long Lasting:
Ellanse
There is also
HA, but there have been reports of "squishy" feeling dicks.
I had
Ellanse done a month ago at Dr. C's office. It's 5+ year filler that also stimulated your own collagen growth, and you can expect to gain .50 to.75 inches in
Girth, depending on how much product is put in, and your particular situation. Your length isn't bad. Right on average or slightly above. The
Girth is obviously lower, BUT that's the good news. Lots of
Girth options.
Good luck in whatever you choose.