First off, it's nice to see a Newbie go into as much detail as you have Anonimatrix. It was well written, and it let everyone know enough about you to make educated suggestions. That makes a world of difference when it comes to giving advice.

Second, I think everyone here has given you good advice. Since your strength is still increasing, but your weight is not, you need to up your calories. Add another meal, and another protein shake every day to what you are doing right now. That should give you about another 750 calories a day which might be all you need to grow some more. Also, try the supplements suggested by tt333. Hammerhead's diet plan looks pretty sound, and since you said you probably could eat alot more, that is probably the thing that is limiting you the most.

If you still haven't gotten anymore weight in a month or two, then you might want to consider aas. Post here again when that time comes, and you will surely get plenty of responses (especially if your post is as well put as this one, and it looks like you have done your research). Pete 235 is right about the Parabolan, and Fedski is correct about the test. Unless you can get ahold of the bottle of test and figure out exactly what it is, I wouldn't waste my money or time with it. Get legitimate products. It's alot less frustrating! Keep us posted.