Lets back up for just a min and look at your goals. Steroids will increase your strength, but they are not very good for fat loss. Bodybuilders depend first on diet to get lean. Believe me, we SUFFER like you wouldn't believe to get to the conditioning we compete in, but we also use fat burners like clen. Clen is not an AAS but it will help you burn fat. If your diet is right, it might take you 5% further than you would have been able to do on your own. If you aren't commited to a diet, it will do very little, but if you work your butt off with diet, cardio and weights, that 5% help is a lot. If you want to get super lean, you'll never be able to do it safely in a 12 wk steroid cycle. What I would suggest is take it in phases. Maybe start with 2 months of working on diet and cardio. Then another 2 months of adding in a fat burner like clen. Then do a 12 wk cycle. Now heres the thing about steroids. Believe it or not, the injectables are much safer and less toxic on your body than the orals. We only use orals for short bursts. 4-6 wks at a time. We use TEST as the base of our cycles for a lot of reasons. I've explained many of the reasons in various answers through the Q/A, if you are interested in reading more. With the right information, along with quality gear, you can do injections safely. They are done every day, in medical settings and at home by HRT patients and anabolic steroid users. The key is knowing what you are doing. Without the proper knowledge, sure, its a scary idea. So with the idea I'm proposing, take your time and learn everything you can about using injectable test cyp, as you learn to first get your diet perfect and second, add in a fat burner like clen. 

As far as drug testing for the work place, they are testing for rec drugs, not PEDS, unless you are in LE or a higher end gov job. And even for LE, they usually have to have a reason to believe you are on gear, before they test you for it. 

As for the "legal steroids", dont even bother, bro. That stuff is total snake oil. They are trying to take advantage of people that don't know any better. Total bullshit, excuse my language, but it is. If you are going to do this, do it right. By the time you reach phase 3 of this plan, you'll hopefully reach about 15% body fat and from there, the dieting will get harder. Adding in a 12 wk test cycle will keep you strong and aggressive in the gym while you shave your body fat down. You can get as lean as you want, bro. Hell, you could even get on stage if you wanted to take it that far. Its all about how much work and effort you want to put into learning the tools and putting in the energy.