I plan on routing a 5 foot section of suitable wire from my 200 amp subpanel behind quarter-inch pegboard to the wall charger rear entry port. (The garage wall is sheet rock with the pegboard attached via 1x2 furring strips). My incoming model S (sans twin charger) only requires 60 amp breaker maximum. Do I plan ahead for a possible second electric vehicle and go with the 100 amp wire and breaker? In either case, what is the best wire (Romex or rubber coated style) to route behind the pegboard into the back of the wall charger? Thanks!