Are you talking about a freewheel hub? Don't count on being able to do much chainline adjustment with spacers. There aren't enough threads on the hub. You need to respace and redish. If you're talking about a cassette hub, then you probably mean single speed unless your going to buy a $65 Surly Fixxer.
You don't have to buy short chainring bolts. I shortened the ones I had on a bench belt sander. Actually it's the nuts on the back side that need to be shortened.
That crank will work. One of my single speeds uses a converted road double. The other uses a converted mtb triple. I used the shortest BB spindle that would allow the chainring to miss the chainstay.
