Tonight I had some down time and decided to look up the RC regulations at the FAA website. There is a special category of UAS flier called "Recreational" and the rules are reasonable! The two main rules are that you have to have 2 things with you when you fly, a registration certificate, and a certificate that says you past the TRUST test.
I took the TRUST test first. It is free and is an ok test. You can re-do failed questions until you get them right, so it is really there to ensure that you have the knowledge needed. I took it, passing on the first go, and the whole thing took about a half an hour, including going down some of the links to review information. After passing that I saved the TRUST certificate. I will print that out at the next opportunity.
I also registered. The registration is applicable to all of my planes, not just one of them. I will put the number on the planes and will keep the printed cert in my transmitter case.
Oh, the final requirement is to fly in un-restricted airspace (or get authorization). My flying spot is in unrestricted airspace so that means the new regulations will not impact what I have been doing! I am relieved.
There was one additional note in the FAA website, and that is that aircraft should not have been registered in another country. Because Japan is being slow to approve my registration requests, and because I will want to fly those planes in the US, I will probably drop my plan to register in Japan and will switch to sub-100 gram planes here. I am also uncomfortable with the bulk of Japanese regulations such as the need for a safety spotter at all times, Pre-authorization to fly anywhere, and reporting in the event of a crash. It will be very easy for me to violate those requirements so I will probably just opt out and go with the lightweight planes.
I am happy to say that in the US system, being over 250 grams is not a big deal due to the Recreational category.