Thanks for getting the info posted up. I am curious what compounds you ran in the past too. Anyways, I am going to suggest that you continue with your doc prescribed dose of test c, and get your bf% below 12%, 10% being optimum, before increasing the test dose, or adding any other compound. For any "other" compound to shine, one's bf% really should between 10% and 12%. Your line of work coupled with training, it should be fairly easy to drop 3%. It's going to be almost all diet at this point, get it dialed in. Calculate your TDEE to ascertain your estimated maintenance calories. Then drop 200-300 calories below maintenance in general, or run a carb cycle diet (Carb cycling worked great for me, some say its bullshit, figure out what works for you and go with it). At the end of the day its all calories in calories out. Calories are all the same as they are merely a unit of energy, but the source of those may make a difference depending on your sensitivity to insulin.
Start with 1 gram of protein to pound of lean mass (roughly 190 pounds), then 20-25% of your total calories come from healthy fats. The remaining calories will com from carbs. Eat between 5 and 7 meals per day. Once you hit 12% assess whether you are still dropping bf at a good rate, and continue to 10%. While you are working toward this goal, decide on a goal (lean mass gain, strength or power, recomp, or continue catting. Once you've landed on that decision, research training approaches that will give you the results you're aiming for, and design your meal plan to reflect that goal. Diet and training are THE most important aspects of reaching your goal.
My final suggestion is to run a testosterone only cycle at 500-750mg per week for anywhere between 8 and 12 weeks. 8 weeks if you run test prop, and 12 week if running test e or c. Then back to trt for the same time you were on. After about 6 weeks on trt, get blood work again, even on cycle is a good idea.
