Everything you ever wanted to know about Fish Oil
HERE
basicly it helps with fat loss, and body recomposition. Along the same lines i'd reccomend some Sesamin, or MAN Nutrition makes a product called Vaporize, that is both fish oil and sesamin together.
As far as stims go, I'd say revise your diet, and hit the gym hard for atleast 6 weeks before you even consider Leviathan, or another stim. The reason I say that is because you will lose fat quickly right off the bat, and the last few pounds are always a bitch, so save the stims for when the going gets tougher.
nice ink btw man.