speed up would be relative to how much time you had in the "ladder" and it wouldnt be as strong due to not over lapping the wall studs with tubing or channel (which is normal)
I personally think it would be alot harder to manuvere a huge ladder and get everything lined up, than to just raise the roof insert your "extensions" into the window posts
You don't need to follow any guide lines with this, since there is no def. way to raise a roof, the above principals I laid out have become the norm since they are time proven and work
Good luck with roof raise
Our build La Tortuga
Accept the challenges so that you can feel the exhilaration of victory.
George S. Patton