Yes, I think it would be interesting. Northern Brewer work for both bittering and flavor, so they are good as a single hop.
It looks like most NB's are more in the 7-8% range than 9%. That's not a huge difference, but you could move more hops to 60 minutes to keep the IBUs in the 35-40 range (or just accept lower IBUs...25-30 isn't bad).
.75 ounces at 60
.5 at 20 minutes
.75 at 5 minutes
There are really several ways to go, but usually there's some at 60, some at 20-30, some at 5-10. Adding at zero or dry-hopping are options, but you don't have enough hops to do all of these.