Please keep in mind that jumping requires you to take in 3 factors
1) Height of obstacle
2) Width of obstacle
3) Distance from floor to body
Now take all this as a rough guide, I've not jumped anything myself but I have concidered the idea of course.
If you can jump 3ft, for example, can you maintain 3ft whilst travelling in a direction.
What I'm saying is you need to be able to maintain enough height in order to clear the obstacle and to recover your feet to get a smooth landing.
My main fear for anyone jumping is a foot clipping on the way up causing you to faceplant.
If you're going to do it
1) Have someone with you for support
2) FILM IT PLEASE - as a teaching aid to others - both if you make it or if you fail!