For our kitchen remodel we are changing our stove/oven to gas which makes the 50amp 220/240v electric circuit available to feed a sub panel. I would like to use the original #6 wire to feed the sub panel that will have a 20amp AFCI breaker for the bedroom and a double 15 amp breaker for the dishwasher and disposal. Will this work with a 70amp sub panel with two breaker positions? Anything I should be aware of? I live in Northern California.