I can't tell you how many times I've heard guys say, "I'm going to just run one cycle." Truth be told, for most once you cross over, then it is very hard to turn back...this is not to say that one cycle is not possible, just unlikely for most. If you can do that and that is what you want to do, then you can have success with it, but their are some disadvantages IMO. For one, you don't know how your body is going to react to certain compounds, everyone reacts a little differently depending on the compound. So trial and error comes into play and experimenting with various compounds and stacks. Only through a handfull of cycles can you start to determine what works best for you, what produces the best gains, the least side effects, and is the most maintainable after the cycle.
If you do this one cycle, a very standard first cycle is 500mg of test wk for 12 wks along with 30mg dbol the first 4-6wks ed or 50mg of winny the last 6wks ed. Of coarse you could have good success with just 500mg of test wk and nothing else, but either way you go proper PCT is a must...3 wks after last pin start 3wks of nolva...wk1 40mg ed, wk2 30mg ed, wk3 20mg ed. Things like HCG are probably not necessary with this cycle or PCT and you can get by without an AI, but I prefer running some sort of AI throughout all my cycles no matter how long or short they are and regardless as to how much AAS I am taking. For your cycle .25mg of a-dex eod would do you well with your cycle.