Your recipe looks good to me. Perhaps too bitter, but I assume it is going to sit for quite awhile so the bitterness will drop with time.
I used the Wyeast Old Ale blend about the middle of June in my first Old Ale batch. As of now the beer is very funky. It has lots of cherry pie aroma as well as layers of musty aromas that I expect from Brett. The Brett character really came through more than I expected and quicker too. I pitched too warm (75 F) and I suspect that might have something to do with it. It's a good rich beer, just really funky.
Here's what I brewed:
11 lb Marris Otter
12 oz Crystal 80
4 oz Black Patent
3 lb Muntons Extra Light DME
12 oz Black Treacle
1.5 oz Target (10.4% AA)
OG: 1.083
FG: 1.016
IBU: 40
ABV: 9%
Hope this helps.
Jason
aka The Adequate Brewer