Need some lipo size help here

Ok guys, I need a lipo thats 85 x 31 x 18mm

Or dang close, For my 18R im going to get the novak BL system, and im going for the 8.5 turn, which is 9000 KV, so its power hungry. Any input would be good, I need the highest MAH possible, I NEED 1000 MAH plus....

So post what you guys know of!

I have found these, but there RX packs, so IDK what the C rating is on it

http://www3.towerhobbies.com/cgi-bin...?&I=LXRWE8&P=7


And this one is 18C, which isnt bad, but iffy

http://www3.towerhobbies.com/cgi-bin...?&I=LXRVR1&P=7