If I purchase the blackFoot and the Plug and Play system will it come with 2 sets of electronics?

When you are ready to make the purchase select the blackFoot without electronics, then select the computer system. You will also need to purchase cable for each axis at your desired length.

Try slowing your feedrate down and increasing spindle RPMs. End-mills will leave a poor finish if you go too fast. Make sure your cutting depth isn't too much. Maybe the endmill or cutter is blunt? Could it be the feed direction of the cutter? Some materials need to be fed in a certain direction.