thank you guys i think i should change my diet and reach the max i can befor pinning
Not even your max, but put some effort into at least before jumping on the juice. Seriously, if you cant put on some natural muscle, how the heck do you expect to keep it once AAS helps ya get it?
First off, if your actually 7%BF then your likely too lean for anything but looks. Performance, both strength and endurance, can take a nosedive for most folks once they get under 10%. You need to learn to eat for mass and at your weight and height Im guessing that is going to be a lot more work than you think but its required learning before jumping in the juice.