Everybody is just so vastly different that it would be impossible to say how much weight you would gain. So many factors like genetics, motivation, juice, enviroment, and such just take every one down there own separate path. The big thing for me has been to keep a decent journal of your lifting weights and diet so you can correlate the two. It is great motivation to see my week one squat at 295 for 5x5 and my week 5 at 365 for 1x5..which is good for me. It is a kick lately to see 335 on the bar and know I am going ATF on that lift. I see tons of people with 315 on the bar doing 1/2 squats. Then when I see the look on people's faces when I step away and drop my ass to the floor...it is almost as good as the strength gains themselves.