Erm no, it sounds like he doesn't really know what spec will be best for a wheel, so he is asking the forum to tell him which spec he should get his wheel built to. I would say a Echo rim with a profile hub if you want a rear free hub, if not I would get a front free wheel set up. With a front freewheel set up you would have to get new cranks, but the Free hub you wouldn't. A viz fixed rear hub would be the best rear fixed hub for the price With a echo rim would be around £95 for a complete wheel plus the £35 for freewheel and £50 for cranks. It totals £180 for all of it. The profile Hub it's self is £160 new but you can pick them up for about £120 second hand which is built on a rim. My choice would be a profile but that's just me