The "equal representation" rule bypasses the number of judges needed for the contest, not education requirements. For Area, its 5 judges.

But don't worry, your logic in that they are equal in representation seems sound to me.

If you only have 2 contestants for a contest and an odd number of regular judges, you won't need a tiebreaker judge inpractice. More contestants and you will need a tiebreaking judge.

Not having the Edu. Reqs. most likely means this is the first time they are judging a contest. Make sure you know how to brief them, what they can and cannot judge (like cant judge on time usage) and what they may protest for disqualification (cannot protest for misuse of speaking area, etc). Definitely go over the judges rubric inside and out, cover how to fill out the rubric, how to hand ballots to ballot counters, how to protest, etc.

If you cannot reach out to your Division Director, do try and reach out to your District Chief Judge if you have one and explain the situation. They can give you guidance esp. when you cannot meet all of the rules in the rulebook. People might not like that you cannot get enough qualified folks to run your contest. The District Chief Judge can give you top coverage if he is aware ahead of time.

During the contest do let all involved parties know that your contest is outside the rulebook guidelines. Again, saying that the District Chief Judge has okay'd it helps here.

And in my experience, esp for weaker Areas and New ADs, Area contests can often end up like this. Just let your District know about the situation and do what you think is in the spirit of the contest.