I hate to contradict Stephen on this one, but height has almost no bearing on whether or not you can land these tricks. It's all about having the fundamentals down. I've taught tons of people how to do this jumping 1 wake with about a 1-2ft of air. We do have an advantage with them because we have a dry land training tool for them to use. But you should be fine as long as you have the proper fundamentals. You can also learn it from an olli.
Good luck bro,
mike schwenne www.westcoastcamps.com
ps make sure not to spin with your body off the wake. wait till your in the air