You just need to consider the chainline. You should take off that 53 and just use the 39, unless you
buy a size in between (if you want cheap, get a Rocketring chainring). Remember, you need single
chainring size bolts to do this. They are pretty cheap, but absolutely essential. With using a single
chainring, you also have the option of attaching it to the inside or outside edge of the crank. Again, this
is to help in achieving the straightest chainline you can.

If you arent afraid to build a wheel, just get a $40 hub from IRO cycles.

Some riders might suggest shorter cranks than 177.5, but you may be ok.