The B riser and #3 limbs will give you a 64" bow, and you will need a string of 60" long. Brace height can vary from shooter to shooter but recommended brace is 7"-8".
Personally, I like to start on the low end of 7" and twist it up a few turns until I reach best flight, quiet, less shock, etc. However, I usually end up on the high side around 8" with a 64" TD.