DO NOT START YOUR CYCLE!
Ok bro, let me try to answer a few of your questions. First, it's not necessary for you to lose 50% of your gains off your first cycle. As a matter of fact, I think you get the best results from your first cycle (personal opinion only). It's just a question of making sure you have the proper post cycle gear around (Clomid, HCG)
If I where you, I would take your order and then turn around and place another order before starting a cycle. (If your source was reading this, he'd think I was advertising for them. Which I am not!) But it's true... Let us know what you want to achieve with your first cycle and then we can give you some good solid feedback... Remember, all you're going to get from this board is peoples opinions. Granted, there's a lot of knowledge and experience to draw from here, but everyone is still going to have their own ideas. Not to slam your source, but remember that they are there to make $. If they are out of something, they may be trying to steer you into something they currently have in stock. Read, read, read and then read some more. In between do searches and ask questions.
Good luck and welcome...