just my two cents. cuts the melanoiden malt completely, use pilsner as the base instead of munich (12# pilsner), still use munich (3#). Maybe cut the caramunich to 3/4#.
Let the pilsner malt shine! Mash high, I like 154, maybe try to push 156 if you can. If you can step mash I would do 145 for 30 min and 156 for 60 min.
Like I said, just my two cents. Either way you will be brewing a tasty beverage!