spooki is right about upgrades-but the bike is built, and you are not buying a project, so it is less important than when people propose buying a French frame and doing a buildup. If the cost of this bike represents your beer money for the year or the next car payment, don't do it.

If you like it and it works, and you can get it for ~$180-250, then don't overthink it. Spooki was beaten senseless by a French Threaded Bottom Bracket as a child and has an irrational fear/respect of messed up French stuff.

Do check on the hub. If it is not a flip-flop hub, then it might not have the threading for a lockring to hold the fixed cog on. On the other hand, more than one SS person has just threaded a freewheel onto a fixed threading and just engaged 1/2 of the threads, so maybe it is.

The forums can give great advice from people's experiences with particular frames, but it is uniquely useless at telling you whether you are a fixie or SS guy or whether you lean to new and cheap or conversion/old. It is your bike, you make the call.

One note: You would not have listed it here if you weren't a bit irrational - you would have already bought a BikesDirect SS.