I think it looks pretty good, with a couple of tweaks.
1. KISS. Your grist is pretty complicated. My best Browns have 3-4 malts, tops. You've got six.
2. Smoked malt = Blech. I strongly urge you to omit it.
3. When you're using two kinds of Crystal malt, it's a good rule of thumb to use less of the darker. The flavors of dark Crystal malt are more intense than lighter, so you can use less of it to have an impact. In this case, I'd omit the dark Crystal entirely. Don't need it.
4. Oats lend a nice creamy smoothness. I'd keep 'em. Good idea.
5. I'd ferment this with a different yeast. The homebrewed beers I've had with 1332 have never been better than "Meh". I like some esters in my Brown Ale, American or not. If you want American and you insist on Wyeast, opt for 1272 instead. If you'll consider White Labs, try WLP051. I like either of those
infinitely better than 1056 or WLP001. Or you might consider an English strain; your finishing hops strongly resemble Fuggles, so the flavors will meld nicely.
Here's a revised recipe based on my recommendations:
A ProMash Recipe Report
BJCP Style and Style Guidelines
-------------------------------
10-C American Ale, American Brown Ale
Min OG: 1.045 Max OG: 1.060
Min IBU: 20 Max IBU: 40
Min Clr: 18 Max Clr: 35 Color in SRM, Lovibond
Recipe Specifics
----------------
Batch Size (Gal): 5.00 Wort Size (Gal): 5.00
Total Grain (Lbs): 9.50
Anticipated OG: 1.050 Plato: 12.48
Anticipated SRM: 21.7
Anticipated IBU: 40.2
Brewhouse Efficiency: 75 %
Wort Boil Time: 60 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential SRM
-----------------------------------------------------------------------------
84.2 8.00 lbs. Mild Malt Ashburne USA 1.036 5
5.3 0.50 lbs. Chocolate Malt USA 1.029 350
5.3 0.50 lbs. Crystal 60L USA 1.034 60
5.3 0.50 lbs. Flaked Oats USA 1.033 2
Potential represented as SG per pound per gallon.
Hops
Amount Name Form Alpha IBU Boil Time
-----------------------------------------------------------------------------
1.00 oz. Northern Brewer Whole 9.00 40.2 60 min.
1.00 oz. Willamette Whole 5.00 0.0 0 min.
Yeast
-----
WYeast 1272 American Ale II
Mash Schedule
-------------
Mash Type: Single Step
Grain Lbs: 9.50
Water Qts: 12.00 - Before Additional Infusions
Water Gal: 3.00 - Before Additional Infusions
Qts Water Per Lbs Grain: 1.26 - Before Additional Infusions
Saccharification Rest Temp : 150 Time: 60
Mash-out Rest Temp : 158 Time: 10
Sparge Temp : 170 Time: 10
Total Mash Volume Gal: 3.76 - Dough-In Infusion Only
All temperature measurements are degrees Fahrenheit.
Good luck!
Bob