What size horse should I get for my height and weight?

I am 15 and I've been riding since I was nine, but never really took much consideration into the size of the horse since I was happy just to be riding. I'm getting my own horse(again) soon and I'm wondering what height would be best for me. I'm really looking at more muscular horses anyway. I'm 5'4" and 180lbs.

Thanks ,
April

Any horse! Haflingers are a lot of fun, so are QHs, Arabs, etc.

What are you interested in doing?

Instead of breed, though, it's worth it to make a list of qualities you'd like to see in your future horse.

Well, I've never ridden gaited horses, so probably not a gaited one. I like horses that like to get up and go, but can still be calmed down to walk. Yes, I know that requires patience and training on my behalf. Also, like I said, I prefer muscular horses, I like riding bareback, and it's not very comfortable on a thin horse. As for what I intend on doing, probably barrels, just for fun. If my horse is good at it and enjoys it, then we'll step it up, but that will be shown later on.