Read an old post on another board pertaining this same idea. The writer thought that Bill Roberts had ripped the idea off and that 3 weeks was not long enough. The writer suggested 4 week cycles of test prop ed at 75 mg stacked with either dbol (30 mg), tren, or winstrol. The long story short was 4 on 4 off 4 on again. Lots of medical reasons why, lipids, shorter pct, and others.
With test E or C your cycle will never get off the ground at such a short period of time.
I don't know if I would upset the mods by posting a link so for now I won't.