Maybe you could make the jump on lip a tad lower and also add some posts to the top that can be used as handles to get some extra speed(sort of like the top of a ski cross course).
You never know until you try though. That's the best way to figure out what changes you'll need to make.
I doubt you will get enough speed. Just make it bigger man. It will just take a little more wood. Trust me, if you work hard to make it good, it's definitely worth it in the end.
yeah like other have said i think that speed will be your only problem. its a nice transition though. so maybe try to extend the in run so it is longer and higher, but other thans that it looks nice
I think you won't be able to get enough speed from that, but try it out before you build something else, a picture can be deceiving. And don't forget to use lots of soap and water.