If it is hard to crank over, the ignition could be too far advanced. Pull the plug wires or the hot coil wire to test that theory.

If you go with the Ultima or Dyna2000i (I have used both) you can get the free programming software here: http://www.dynaonline.com/skins/downloads/ and select software/Curvemaker for Harley.

You can get a USB programming cable for 40 bucks here: https://sites.google.com/site/vrusb2000i/