I'm not as experienced in giving advice when it comes to this subject, but I'll tell you what I know.

Nobody cares how much you can bench! It is not about numbers, but form. You aren't to feel disappointed with your bench and squat, instead worry more that your form is dead on. Perfect form means you can do additional weight (through my experience).

My friend told me the best way to build mass is to surprise your body with something that just tears it down to pieces. If you are leaving the gym feeling great, you didn't do anything. If you leave the gym feeling like if you look at another weight you're going to puke, then odds are you did something right. There is a threshhold that you have to break in order to build muscle. It's that point in which your mind and body are telling you one more and you're done, thats where you need to kick into "I want to get big" mode and kick some ass. Just lifting till it feels good just makes you tired, break that thresh hold then you will know what "feels" good.

When me and my friend do the gym we hardly ever do the same thing. We are always changing it up. It's always a surprise to your body, it doesn't know what you're going to do that day.