I think overall it looks like a really good starting point. I love hoppy amber ales and brew them a lot. This is in the ballpark of what I brew.
I go about 60/40 or 70/30 2 row to munich.
The flaked oats is awesome - keep it for sure, and even go a pound - makes for a nice creamy ale.
I think your hops look great. I usually go with falconers flight, but what you have looks perfect as well.
1450 would be a good yeast - I am meaning to try it in the near future. I usually use 1272.
Differences for me -
a pound of crystal 120 is a lot in my opinion. I usually use about a half pound of caramunich III and maybe a quarter pound of crystal 80 and then use tiny amounts of crystal 120 and chocolate to get to a color in the 14.5-15.5 range. I do like a little of the chocolate, or debittered black because it gives a "ruby" hint to it. I am talking 1-2 ounces of the crystal 120/chocolate
Also, not sure what your efficiency is/batch size . . . but seems like a lot of grain. I shoot for gravity in the 1.055-1.065 range.
looks like a good recipe though IMO.