I've read a lot of threads on here regarding tire pressure, but since the touring model has different tires, is there an ideal pressure for it?
There is no "ideal" tp. You need to find a balance between ride, handling, and economy that you can live with. If you running a pressure under the max as printed on the tire then try increasing it to the max.
I've also read many of the threads related to tire pressure. Can someone please explain the reason behind setting the front tires 2psi higher than the rear tires? Does it really make a difference?