You can do whatever you want on a first cycle.
The reason why a moderate dose of test is normally done first time round is because it will be very effective with minimum sides.
As well as being very effective, it will get you used to pinning and how your body reacts.
Once you are abit more experienced and clued up you can then get more advanced and add in other compounds depending on your goals.
Adding in random compounds at random levels fist time round is just poor planning.
If your goal was lean mass then test p and tren a (mast p could be added) with a clean diet is often used for a short cycle/blast of 8 weeks + Fast acting compounds means pinning ed or eod!
If your goal is mass then test e, tren e/deca d (eq/boldenone could be added) for 12-16 weeks is often done - Slow acting compounds can be easy to pin with 2-4 pins per week.
Of course on top of oils, theres the orals too…
So in short; test is a good first cycle because it is simple and gets you ready and more experienced ready for the stronger stuff!
HCG is used throughout a cycle no matter how long…