Yes sorry, I forgot to add that it. I would bring my instructor for sure! Because she can hold a video camara really well and instruct at the same time, I'm joking. She would come because Chinga and I both need to learn alot and she would be the perfect person to teach us.
We aren't as trainer oriented in AUS - I personally ride CC often by myself or with friends, and so do most people I know. Having said that, we are all experienced jumpers and not jumping super heights.
Yeah- I don't have a trainer at all--- I do have some XC jumps at home that I have built which I work over but I agreed Never go out on a full size course by yourself---- if your horse gets scared- which chances are it will first few times and something goes wrong you can be kilometers away from help.
I think its best to get your dressage really down pat. The control will translate from the arena to the cross country course.
Also, if you wish to be competitive, many people at the low PC levels seem to go clear XC and SJ so you really have to do well in the dressage to win or place.
If I were you I would maybe primarily use a dressage instructor, and then when you have got that going really well, start attending clinics and such with PC and other Horse Trial organisations for XC training. It'd be good to get an eventing instructor, but I don't really remember seeing many around when I was riding, it was mainly Dressage instructors or Show Jumping Instructors, but I am sure you could find one. Clinics through Pony Club, and things like Pony Club camp are good for intense learning, and often the PC will get some good instructors out that wouldn't normally be available to you. Although obviously listen to your instructors advice.
Be safe. If you hit a cross country jump they don't come down, you do.