its definitely not impossible for a "military time" only guy to go out and do the CFI/MEI thing in civi land. It is something that a guy with no piston time will want to very slowly work into, and definitely do a fair amount of prepping with another CFI/MEI... especially if trying to do some instructing in a small twin. There may not be anything out there that will kill you quicker than being behind the curve after losing an engine on a twin that has no performance and just wants to roll over on you.