Before starting juice you need to assess your diet and training. If you're not growing after 4 years it's probably changes you need to make with how you eat and how you train.
What's your height and weight? Why you want to get down to 7% body fat? While using Deca to get to 7% body fat? Why using any juice at all to get to 7% body fat?
Welcome to the board.
Thank you for the detailed first post.
Steroids do not get you in shape. They are used as the last piece or ingredient after consistent diet and training for many years.
You have just been diagnosed with low T and you want to give you her testosterone replacement...
Smart move.
When I was in my late 20s I made the mistake of using a lot of those things in combination and I regret that just as much as I regret any of the stupid things I've done over the years.