Dahon build

kowalski ISIS drive is a bad thing on a fixed wheel.
FSA kit in my experience is not that bad for generic Taiwanese kit. Certainly good value, but the finish tends to be very poor.
The Carbon track cranks are kinda pricey and I think they run a funny chainline, ie they are fitted to these planks
http://www.avantibikes.com/track/pista-pro.aspx?bid=28
which run Ellipses ie a 44mm chainline.
As an aside, the frame is the exact same shite that Terry Dolan knocks out.
Dodgy Irish crooks, Australia....

They're Kiwi actually and quite good for a start track bike, so I've been told.