I don't know how big 155lbs on somebody who is 5'7 is, but I guessing you still have quite a ways you can go naturally. Secondly, I wouldn't mess with that prohormone crap at all. Your best bet if you're hell bent on cycling is to do a test only cycle.
And yes, you take it orally. As far as dosage and duration, I think once you get your cycle planned out and posted people can help you figure out what would work best with you.