You might be overthinking this. I have found the stock pads and rotors are a nice match. I get 2 pad changes per 1 rotor change with that setup. Putting a more aggressive pad on there you run the risk of having a 1:1 ratio which may actually end up costing more $ in the long run.
Btw. I've noticed the LR # OE rear pads have gone through multiple iterations since '09. Early ones had no chamfer on the leading edge, then they did. The next set I bought had the soft metal shims, then they came out with a sticky peel away backing version, so I'm not even sure LR has a definitive solution to the rear squeaking.