I don't know where you will be competing so this may not be relevant, but maybe so. When I started competing, I used what I had and then once you start winning and placing well you should be able to get a sponsor which will lead to the nice gear. wax, start, and technique make a much bigger difference than the difference between a kessler and a burton when you are just getting started.
I recommend a salomon burner if you can get ahold of one or an atomic for a cheap fast freeride board to race on. Freeride Burtons & palmers are also great choices.
Do it!
