There is no limits brother. Those friends of yours are like mine, I always wanted to buy a shit load of weed and have the hugest session ever, and no you can't reach you limit, me and my friend downed an ounce once and we were the most fucked I've ever been, take in mind it took us 12:36 to smoke it all, which makes a gram and a bit each hour each(but I have smoked like 5 grams to my face in like 2 hours, getting that retarded isn't always too fun) I have never been that ripped, and good plan, but buying more then 1/2 ounce is always better lol.

Peace :rasta: Them Belly Full