i would go for and use the the BB lockring to see if you like it. Just keep a brake on it if tries to spin off. I rode my MTB SS for a month with just a cog (no locktite or lockring) and never spun it off but I had 2 brakes on it just in case. I'll bet within a month or two you will be shopping for a track hub and rim to do it right. You'll get hooked like the rest of us.
Cheers
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I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC