The Penn Battalion looks to be rated from 4 - 10oz, rather than 2-10 oz.
There is also another 12' model rated for 6-10oz. My concern would be for how accurately the Casting Weight is rated for the rod you have and how much weight, including bait, you'll be casting. I don't have any first-hand experience with the Battalion rods so, hopefully, someone else can give their impression of the rod in actual use.
The Penn 990 holds a LOT of line . . .
http://store.scottsbt.com/PennParts/ReelSpecs/PennMagPower.aspx .
Eventually, you'll probably want to consider a different reel, which could provide more distance with less weight. Since the 990 holds 325yd of 30# Mono, it would likely hold 375-400yd +/- of 25# Mono and 400-475yd +/- of 20# Mono. That's fine, if you need that much line capacity for the fishing you'll be doing . . . Do some more research, if needed !
Tight Lines !!!