It's not that the flow is too long but it would be unsafe for you to try it given the nature of AAS compounds. For instance, notice that cholestrol shares the same steroid backbone as testosterone. Change a few substituents and the action on the body is completely different. Part of organic synthesis reactions is purifying the product from each reaction to feed the next step. If you don't do this you will be a victim of GIGO (garbage in, garbage out). In other words, if you don't have the education, experience, and equipment to properly synthesize a multi-step compound you will most likely endanger yourself and others with the product.
Chemo