For the test, if your doing a lot of oil per injection then draw with 21 gauge. If not 23 can be fine, depends on how patient you are. I use 23 to inject, 1 inch for delts and quads, and 1.5 for glutes. I do 3 week rotations, with first week being L/R glutes, next week L/R Quads, and third week L/R delts. So for you, 2 injects per week would mean a min of 24 syringes at 3 ccs needed. You will need twice the number of pins, so it would be 48 minimum for pins. It doesn't matter what length you have to draw with, so you can go with 24 1.5's and 24 1 inches. You might be thinking that you will have too many 1.5's on hand, and not enough 1 inches for your quads/delts... just simply use the 1.5's more often to draw with each injection, therefore you will be freeing up more 1inches, which you will then have a balanced ratio etc...If you want to make things easier, just order 50-100 of syringes, and 50-100 of the 1.5's and 50-100 of the 1's. You can have better peace of mind this way and also have to make orders less frequently...and unlike me, you wont ever run into the scenario of running out of pins and not realizing it until the inj time and trip out. GL