Travis, I think you'll be fine with the 6-pound P-Line although I'll make one disclaimer ... I love P-Line but their diameter tends to be a bit larger (and stronger) than other monos in the same pound test. You might go down to 4-pound test, get more bites and be just fine on line strength.
Another option is to try 6-pound BPS Excel in the green color. I have used this line on my spinning rods for quite a few years now and it is the best I have ever found for limpness, toughness and whatever else you're looking for in a spinning gear line. I don't pinch pennies with my tackle and would pay more for this same line, but it's nice that it's very reasonably priced. Just means you can change it often without cringing at the price.
As for jigs, I would recommend 12-pound fluorocarbon. As clear as the water tends to be lakewide in the fall, I'd be afraid of line visibility issues with 12-pound mono. Also, you'll have a lot more sensitivity with a good fluorocarbon. If you don't already have a favorite, Trilene 100% Fluorocarbon in the green tint is the best I've found. A bit pricey but worth it, IMO.