I think that phase 1 of SAFIRE is doable for an amateur. A glass enclosure that holds hydrogen as seen below might be within the capabilities of the the amateur scientist. Unlike many other types of LENR experiments, the experimenter knows that LENR will occur in any metal inserted into one of the double layers. The sub atomic particles that comprise the plasma are LENR active. An experimenter can use these SAFIRE features to perform all sorts of interesting LENR based activities.
It might be that the SunCell is demonstrating the same plasma based LENR reaction as SAFIRE is. The SunCell can produce self sustained plasma based reactions that can last for minutes. It would be informative if the SunCell reaction can be produced using SAFIRE methods. This could inform Mills that his theory of the reaction may not be the correct one and that his patents might need to be adjusted accordingly to add LENR to his thinking. The SAFiRE reaction looks like an open source reaction freely available to anyone to use in reactor development.
See some Phase 1 experimental action in SAFIRE.