outdoor plot preparation(with pics)

hey ya all guys and girls.so my working on my outdoor plot and i have dug up the place.i have cleared all the other plants roots what was before there and know theres just a plain organic soil.also im not leaving that just the way it is-soon im planning to take there some potting soil as well(a lot of potting soil)im planning to grow there a 1 white widow clone and about 15 white russians.Do you think i can plant even more or is it already getting too small-please give you opinions and trics and tips.
anyway-keep up the good work ya all....

I think that spot is way too small for the # of plants you are intending to put there.

id say there is enough space there but they will get cramped a little