e-stop and limit switchs are not required to test everything and once wiring and switch settings are confirmed everything can be completely mounted on the machine and run without them just make sure you have a main power switch
if there will be no plug at the motors, i would wire them putting the heat shrink on each wire and a larger one that fits over the sheilded wire. but not heated yet so we can verify color codes. connect and solder everything leaving them well seperated and scotch taped to a piece of cardboard for checking
six feet of wire to each motor will probably do matters where your enclosure will be located.
steve