Mounting a 65lbs Plasma TV onto drywall using self boring anchors?

I’m not much of a carpenter or handyman, but I was wondering if anyone had any experience mounting a 65lbs plasma TV onto a sheetrock wall using a special mounting bracket and simple self boring metal anchors. The beams behind the drywall are metal, not wood, and my main concern is that the 65lbs of weight, including the weight of the steel mounting bracket, will be too much for the drywall to bear, causing the bracket, TV, and anchors to be torn right out of the wall. Do I need to reinforce the drywall with something hard, such as plywood, or will screwing those metal self boring anchors directly into the metal beams do the trick. I don’t want to destroy the TV, nor the wall.

Thanks.
I think using 4 or more 3/8" butterfly anchors (toggle bolts) will do best, as I don’t think I can get anchors into the metal studs based on where I will be mounting the bracket.