Am 27/135lb. planning to going with anabolic matrix rx to improve stamina.
I started out at 135lbs. soaking wet. I get where you're coming from.
No offense, but you need to eat more if size and strength are your goals. I'd buy bone-in chicken breasts, boil those suckers off and eat like 4-5 a day. Add some jasmin rice with a little bit of teriyaki sauce, later on some oatmeal with Splenda and applesauce, get the no sugar added type.
If your body can tolerate milk, get skim and mix that with 2 scoops of whey protein. Drink 3 of those a day.
Like others said, focus on compound movements, bench, deads, squats, bb curls. Build up a base, get to a decent weight, maybe 175-180 for you. Access where you're at and then jump on the supp train. Super DMZ is the real deal.
Ask yourself, would you rather eat and lift your way to 175, and then take DMZ to get another 15-20 pounds, or would you want to top out at 155 AFTER taking Super DMZ?
Be patient. Rome wasn't built in a day.