There is a bunch more to it than that man. There is the ai, the dopamine agonist, in addition to the pct as you mentioned.
Its good you want to have everything on hand before starting. Thats exactly how you should do it without question. 22 is a bit young. Have you educated yourself to the point that you realize your HPTA does not reach its maximum output until age 25 and by shutting it down or off before it ever has the opportunity to do so it is uncertain if you max output will ever reach what it may have had you not chosen to take this step? Think about that for a minute and do not hastily dismiss it. Thats a very big decision with some unknown potentially very bad consequences.
Also there is some merit to the test only first cycle line of thinking as well my friend. Another big decision.
Do you know your pct start times and how they will differ if you do include the deca?
Have you researched PCT's and do you have any idea as to what you might run for this cycle?
A lot of questions I know but ones you should easily be able to answer if you have done the proper footwork before taking this step. If you cannot easily answer those questions I would encourage you to read the stickies and utilize the great resources of this forum to educate yourself at least to the point of being able to answer my questions before even considering going any farther with this idea.