However this turns out, I sincerely hope that someone on your team or advisory panel (or whatever) has experience with "high power model rocketry"; I know nothing about nitrous oxide engines, other than knowing that they are expensive to purchase and/or build, and that they ain't for the faint-of-heart. They certainly aren't toys.
I've only ever seen one rocket launch with such an engine, and was a sight to behold; the rocket itself wasn't that big (compared to some of the others that day on the field), but it was loud (and not only that, it had an interesting sound; less a "whoosh" and more of a "rumble"). I recall that the owner went out on the range, set it up, stood near it while fueling it from a tank, then just before final countdown, ran quickly away. It took off perfectly and landed safely downrange and was retrieved intact (more than one launch that day were lawn darts - with the exception of one that exploded on the pad).
It was nice to see; IIRC, the owner told me he had spent about $30,000.00 USD on the thing. At least he didn't waste the money...
