I'd say about half the time I brew an ESB I doctor it up with American hops a bit. I usually include some EKG's, but then pair it with something else to give it some interest. I think EKG + Caliente + Centennial is the combo I like the best. I think I bittered it to 45 IBU's with Challenger at 60 minutes, then added an ounce each of EKG, Cent and Caliente at flameout.
The Trooper has become one of my go-to commercial ESB's, and they use Golding, Bobec and Cascade. You get some black tea and marmalade that is common in UK hops, but also a hint of that floral/citrus Cascade thing.
Your recipe will make a really nice ESB, by the way. WLP002 is my favorite ESB strain, but there are many good ones out there. WLP013 makes a nice ESB. I've also been meaning to give WY1469 a try, since I'm a huge Landlord fan.