I agree with both of the posters above, either way works great.
BUT, if you must have a new bike single speed bikes new are rather cheap and you can get nice bikes. For example the Masi Uno Drop is a road style bike with full brakes that would be fast and it has a classic look to it for only $550. If you don't like drop bars then the State Bicycle Company Ashford is another classy looking bike with full brakes for just $300. If you like a chrome frame there is the Bianche Pista but if cost $770 but wow that chrome looks fancy! That one also has road style bars. Kona makes the Paddy Wagon with straight bars and full brakes for only $600. So you have a lot of good choices, just depends on what grabs your attention.