New grower, could use expert advice/ opinions on closet grow

Hi guys I'm fairly new to growing I have only had 1 grow which was a couple years ago and back than I didn't know very much about growing and had garbage equipment so it was a pretty shitty grow. However I have grown up much since then and spent countless hours researching everything about growing since than and I now have much better equipment so this time around I'm looking for some positive results this is where your guys info comes into play. So here's the lowdown I am very limited on space and all I have to work with is a closet that's about 6x2( probly under 2 feet at that like 1 and 1/2 to 2) . So after weighing out all my options in my head the best thing to do IMO is grow like 20-25 no veg time single cola plants. I'm hearing alot of people say that no veg will yield too little, when others say the veg time isn't worth it and they still get 1-2 oz per plant. Now I'm not expecting to get 2 oz per plant on my first grow I would b more than happy with 14g per, however I would like to perfect it to get at least 1oz per. With the setup I'm doing now I'm using 6 inch square pots ( converting to grow bags next time to have more soil forthem as 6 inch square pots are kinda tiny) with 2 150 watt hps and I am using the fox farm trio nutes. Can anyone please give me your input if it's a good/bad idea and what I can do to make it better, please I am open to any criticism, thanks guys.

Also, I forgot to add the fact that Theirs 6 super silver haze and and 15 white widow growing they are about 5 inches tall or so right now and I just got my light pulleys today so I took off my t12 veg fixture and put the 2 hps on 12/12. I threw a lil 15 dollar desktop fan that I got from wal mart in their too it blows pretty hard on full setting.