Did your models come from toys r us?
1. Gps guidance is now a £200 addition to most planes. Plot course in Google Earth, upload and go. No need to worry about Rc range (ignoring legalities). Telemtry downlink et all, COTS.
2. A ceiling altitude is not an operational altitude. This thing could work at 500 feet quite happily. Granted 22k seems rather optimistic.
3. At least for WPA PSK you get the handshake and can perform an offline dictionary attack after landing. No need to be in the air for the duration.
4. Thousands of RC pilots all overthe world fly video systems with no interference at all. The 35Mhz frequency is dead and we are on 2.4 ghz with 80 channels frequency hopping every 2ms.
Look on the bright side though, the antiques roadshow might take you on with your planes, Pops..