I learnt more from watching this video than just how to climb without using hands. There are no rules, no restrictions on how you should train, what grade you should climb, or how you should climb it. If you have a clear desire to climb a problem or route, you’ll do it. You’ll send it eventually because it’s what you really want to do, with or without using hands.
If you’re feeling a little stuck or looking for some inspiration, watch and/or read about Johnny Dawes. I particularly like the little helicopter visual for foot placement.