I know the world is funny these days...and it was when I was teaching 30plus years ago...I had one student who was too big height, weight both. He insisted that since the C152 couldn't carry him that he should be charged the same as a C152 when flying the PA28 or C172.
We said no.
No law suit...but he made a big fuss about it.
so be careful. I think the Cherokee is wonderful for teaching...but do the weight and balance...you might even need the Archer 180 hp and even put ballast in the rear.