I hope I can at least add to all the comments. I raced the swatch series and Paul Mitchell. I ran the Gravity Games course in 99 and Chevy Grand Prix. Regionally I did very well in the pro class back when I raced.
Hard boot- Soft Boot. really depends on you. If you can suck up jump in hard boots that have you canted forward then its for you. My preference was really stiff boards. I raced both with Palmer and Option. Both have good and bad points, eventually I chose Option for personal preference. I’m a big guy. My boarder cross bindings are set at 35/5 degrees. Depending on the course, I am about half an inch off center. And I base my bindings off my shoulder width. I have 20 inch shoulders so I run 19 inches center to center. I run Burton bindings with aluminum discs from race bindings. The highbacks are rotated forward with the addition of a calf clip. I run a lot of forward lean. I have tried the Palmer plates didn’t care for them, but I have a small foot. However fellow racers do like them.
If you have no courses that you can try out, run your set up by the local board park and give it a shot. Remember most of BX is pre-jumping. Staying low. So if you can ollie your set up at least a foot to foot and a half you should be good.
Enjoy. I am happy to see the attraction to the sport return. I still coach a local pro here and have a good time with it. I would love to see the event return full force. Never did like slope style.