Firstly, it would be best if you broke up the story with spaces
where there is a shift in POV
Secondly... sorry, but the 'mistake each other for boomers' plot
utterly ruined the credibility of the 'fic.
To start with, Ranma has a talent for reading the 'body language'
of humans and can often determine the skill level of an opponent within
seconds. If he has encountered combat boomers and 'civilian' before he
would probably be able to spot the (often minute) difference between their
movements and that of a human, and even if he did not the differences in
the appearent skill level of the KS would make him suspicious about thier
origin.
In short, Ranma has at least a 50/50 chance of recognising the KS
as human _assuming_ that he has never heard of them in his life (bloody
unlikely if he's lived that long IMO).
As for the 'Sabres, Nene and Sylia have fairly sophisticated
scanning equipment in their suits, more than enough to note the absolute
lack of EM transmissions and improbability of Ranma's 'weapon system'. On
top of that any serious (probably ultrasonic or x-ray) scan would reveal
Ranma to be more organic than a 33-S and force the KS to at least retreat
until they could figure out exactly what they are dealing with.
Odds of KS recognising Ranma as human: 65% (more if they bother
talking to him)
HTG