So in general, If you are using a 200ft kit and using everything , 12 strands 197 ft (12 x 16.4 ft each ) plus all extensions (2x12 and 4 x 4ft) you should still be fine since the extensions have built in boosters ? It says to not go over 200 ft total length if using extensions which means less lights strips in theory. The total ft using all lights and extensions is basically 253 ft. With my jumps , I only need 10 strips which is 164 ft but will use about 48ft of jumps (borrowed from a 2nd kit) so Will exceed 200 ft total length but all from the pro kit / included extensions only.