Like mentioned in the post above measure your drop with the sway bar in as that is going to be your limit. It might even be easier if you kept the sway bar in while you installed your straps.
As for installing the strap(s) I will give you two diffrent ways
(picture courtesy of All Pro)
For the green line use the lower shock mount bolt as the lower attachment of the strap. Then drill a hole in the coil over bucket to use as a mounting point for the top of the strap.
For the red line the lower portion of the strap would be the same as the green line. For the upper part though you would weld this piece on to the frame
then this would go thru the welded on bracket
would look like this in the end
Going with the red line you will be able to fine tune your straps.
As for straps there are lots of good company's to go with call ORW or Kartek for all of this stuff and they will help you out. Also to let you know when getting straps you need to know that they stretch about 1" for every 12" this will very depending on the straps so you need to talk to your salesmen.