Wow, that's pretty quick.
I can barely imagine 3-4 or those rockets going around at the same time. The Adamisin family has always been pioneers in model aviation, from when Arch and Dennis were kids and Big Art took them to the midwestern CL contests where they were the scourge of the stunt circle, and even continuing through today. Perhaps these little screamers would also be the perfect set up for "park racing" with a simple two pole short course down at the local school yard. Of course you Michigan boys are going to have to wait a couple of weeks for it to warm up a bit. [X(]
Make some "Park Pylons" from a couple of 5-gal "Homer buckets" filled with concrete with a piece of PVC stuck in and sawed off flush and a 10-15 ft piece of smaller diameter PVC to slip fit into the socket. Instant pylon! (mix some scrap foam into the concrete if the bucket is too heavy, but don't make it too light or it will blow over)
This could be the beginning of a really cool new racing event and if flown at the local schoolyard, it might bring more people into the hobby when they see how cool they are. Let us know when you have basic drawings Arch, I'd like to put one together and take it to our local Q-25 series.