Very nice. I agree chain looks a bit to tight. My rule: I should be able to see a hint of droop in the top of the chain. The fitter (4 time iron man finisher) at work who is in his mid 40s just converted a bianchi to fixed and now rides it to work every day, he was totally surprised by how much he enjoys it. Fixed is fun, it's true... i ride one too, a conversion with 2 brakes and fenders pretty much every day.
Those Serfa Secas are nice 27" tires, eh? I will have to get a set myself for my "rider" wheels for corky.
Also, do you live somewhere flat? That is a high gear! I run 45/17 and it is about perfect, used to run 42/16 but had the NOS 45 TA and 45/16 was to high for me.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear