If you are going to run a first cycle, a testosterone solo cycle would be best - there is no need to use additional compounds. A good testosterone cycle would look like this:
Weeks 1-12
Testosterone enanthate - 500 mgs per week
Aromasin 10 mgs EOD from the first day of the cycle
Wait 2 weeks, and start the perfect PCT procotol -
https://www.evolutionary.org/the-perfect-post-cycle-therapy-pct/
If you want to add deca in there, you can do so at a dosage of 400 mgs per week, and you will also need to add in some cabergoline (taken at 0.25 mgs E2D from the first day of the cycle), and proviron (50 mgs per day).