I have loaded BP and Pyrodex in AA hulls with the red AA wad and with traditional stacks of card and felt wads that one of the guys had on hand. There is no particular trick to it, just dump in the powder, feed in the wad(s), RAM THEM DOWN, BLACK POWDER SHOULD BE COMPRESSED AND MUST HAVE NO AIRSPACE, measure in the shot, and crimp.
I can't say that two Wonder Wads will be the right height. You must fill up the hull and get a compressed charge and a good firm crimp. It might take three Wonder Wads. You might need some card or felt wads of a different thickness to make it come out right. It took me a good deal of trial and error to get the wad column right. But the red AA wads work fine, right out of the bag.