want to start growing...have some questions

well ive finally gotten to the point where im tired of buying weed, i spend alot of my money on it. so ive been wanting to grow for a while and ive been reading up on it, but before i do, i would like to keep some weed every harvest, but then be able to sell the rest and make enough to pay my car payment $200 a month, does that sound like a realistic profit? also how many plants should i have, i want to do some good weed, ak-47 or something similar. i will be moving into an apartment soon and will be using one of those huuge white cabinets from wal-mart, about 6ft tallx4 ft.x3 ft, will this be enough room to grow enough plants for my goal?

sorry if its in the wrong place feel free to move it.


thanks