I'm your height, and I passed on a Surly because 60cm was the biggest they could get. It was just too small. My two main bikes, an Atlantis and Rambouillet, are 64s, and if I had it to do over, I'd probably go up to 65 (Rivendell recommended that, but they didn't have them in stock and I was eager).
Before I got those, I rode for 15 years and thousands of miles on a couple of 62cm frames, the largest most shops stock. They like to sell what they have, and they promised longer seatposts and stuff to "make it perfect." They were both rideable, and at the time--until I got the Atlantis--I thought I was as comfortable as you could get on a bike. There are other factors that make the Atlantis and Rambo comfortable (higher bars, Brooks saddles etc), but size is part of it. The first time I sat on the Atlantis, I was able to spend 25 percent more time in the saddle without discomfort than on my previous ride.
You may be able to make the Surly work, but my advice is to figure it out BEFORE you pay for it. Otherwise you just get another place to hang rags in the garage.