Hi and welcome.
The Mules certainly are beauties. Nailing that famed 59 LP sound. For you however, I might consider the Riff Raff a bit more. They are a bit more harder edged and brighter than the Mule, which makes them great for your application. Obviously great for AC/DC and pretty much all rock tones. Plus they have the added advantage of being able to go more high gain than the Mule. Though that one still can confidently do Ozzy Osbourne type stuff the RR can take it much further. Thus, it should cover the metal front a tad better.
Final alternative would be the Black Dogs. Those are a bit hotter than the other two, fitting the hard rock thing amazingly, and Led Zep most of all.
Problem is that all three of these, and others too, will do the job probably equally brilliantly, but in different ways. That is the main BKP issue, you just have too many viable choices. It is best to get listening to soundclips and check out the Review Collection Thread sticky here.
I am not familiar with your current pickups, but BKPs are something very special imho. The clarity is staggering. You just get so much beautiful detail, string separation, and more. Also just the right kind of mojo. In the end they make you want to play better and reward you for it too.