Above all never shortcut the quaranteen period and you Bichirs should suffer no ill effects from live.
I totally agree with you on that one, my friend that feeds live always gives me crap for holding them for a week but I keep telling him look at my tank, never once in the time I have been feeding them live have I ever had a problem and you go to petco and just dump them in and are fighting ich once a month or so. I even offered him my spare 29G for a feeder holding tank and he said nope,your just crazy...hahahaha