Thank you! I knew it had to be simple - or it would be done frequently by family businesses. I knew it wouldn't fly for an S Corp, if only because the owner and parent wouldn't be allowed to participate anyway. It totalled out to ~$1500 in avoided FICA/SUTA on the profit sharing contributions, plus an extra 10% of sick leave accrual on the additional 'wages.' I'm unsure whether 'unreasonably' low compensation is a legitimate issue for C Corp employees, but that might be above my pay grade. Total comp is significantly higher than just wages, which might mitigate that concern.
This begs the question, though, are they asking for trouble maxing out their health FSAs, if they aren't making a concerted effort to spend it down annually? It's used appropriately, to cover all incurred medical expenses, but I don't think there's ever been a year where they were able to make the full $2750 contribution each after allocation of prior year funds. It seems to me that this is the very definition of a self funded insurance plan, but it still might not pass muster up against 'reasonable belief.'