I believe I got this recipe from the BYO Big Book of Clones. All the recipes I've brewed from it have been great. None of the grains are repeated, it's just the way I used to break down ingredients to send to my lhbs for grain orders. That's how they had to be put in for purchase. So 2-row is actually 9lb 8oz's.
I doubt you'd notice much difference in mash temps provided you don't go much higher.
Munich will probably change it up a bit, but hey, we're homebrewers. We get to do that if we want!
I haven't used Wyeast, but it looks like that's just their equivalent, which I'm guessing is probably damn near the same *(recipe lists 2112 as well). I've also used wlp001 and been just fine. It's a forgiving beer.