Looks like you've received your answer on the muzzle brake. As for the stock, I'm currently using the Hogue Overmolded stock and I love it. It's just a little heavier than the synthetic stock that came on my Tactical, but it fits well and is really comfortable to shoot. It's held up well to roughly 400 rounds of shooting so far and I don't expect any issues to arise.
I'm not a fan of folding stocks so someone else may have some feedback on those. But I can say that I love the Hogue.
Three old hunters were walking through the woods one day. The first looks over at the others and says, "Windy isn't it?" The second says, "I was sure it was Thursday." The third says, "Me too! The heck with hunting, let's go get a beer!"