I am not familiar with those strains, are they regular or auto strains?
If you are growing them outdoor they are going to go in to flower pretty quick. Each day the amount of daylight is getting shorter and cannabis are triggered in to flower by the length of daylight. This late in the season you would be better off to grow indoors.. Also i grow in pots or raised beds filled with fox farms ocean forest soil. You will get a better plant if you grow in a good quality potting soil..
If you were in So. Cal I would suggest adding supplement light to keep the length of light longer so the plants would keep vegging and then take it away when you want them to bloom. Vince it sounds like you are in a colder climate the plants would prob. Freeze or mold before they got to a harvest point.
Hope this helps.