bigger buds, newb question?

I grow bagseed, two 150 hps, usually two females at a time, topped, beastie bloomz, miracle grow soil. two weeks veg, 8-9 flower. Is there anything im doing wrong? I only get an ounce a plant. I just want monster nugs.

Sounds ok to me except for the MG soil, that is my personal opinion btw. Veg longer if you want more yeild.

thanks man, I appreciate it!