I'm not trying to be an asshole, and props to you for posting pics of yourself when you may not look your best.
That being said, you look pretty overweight/unhealthy to me. Are you obese? No. Are you healthier than a lot of people? Sadly, yes, but I still think you look too much like a more muscular version of George Costanza. You said you had been "off and on" for 4 years, which I take to mean you made basically no progress in the gym. You really just look like you've gotten chubbier since then, and in that previous thread you were talking about needing to lose weight.
If you don't particularly care about your physical appearance for the time being, go ahead and bulk up, and get stronger, etc. I certainly wouldn't recommend it though. Have you ever actually been lean? Again, I'm not trying to be a jerk. It's a serious question. I'm guessing probably not, or at least not in a long time. I think you should diet down, and actually get to the point where you like what you see in the mirror, and you look healthy, and then worry about bulking up. Maybe try to be a little more healthy about it, too.