I have an entry-level road bike that I've bought two years ago. I've been wanting to get into fixed-gear lately and I thought of converting my current bike into one. The problem is: my bike have vertical drop-outs and therefore I have to buy an eno eccentric hub and to have a wheel built with it (which will cost me around 250 $) My question is, is it worth to convert a road bike or I'd be better off just selling it and buy a brand new entry level fixed gear? I'm not planning to ride it on the track, but merely on the streets, as a commuter, bar bike, occasional long rides. After I change the rear wheel and hub, is there anything else that I must buy in order to the bike to work properly as a fixie? (For instance, I don't know if I have to change the chainrings and crankset too.)