You have 2 different strains... you will want to cut the diesel before you cut the kush.

The Diesel will tripple in size so if you cut it at 12" it will end up at 36"

I hope you have a good size area.....50 plants if grown right will fill a nice 12x18 ft. room with 6 -1000 mh.....With a 10-20 lb yeild

You can get 1/2 oz a plant or 4-6 oz a plant...depends on how long you veg and under what wattage lights:hippy:

Flower time for OG is about 8-9 weeks..SD runs about 11-12 weeks