99 ac problem

I've got a freon leak in the heater area. I can smell odors from there and loses freon. Does anyone know how big of a job it is to get to the evaporator or the o ring connections to the evaporator on this car? I have had the dash off before to get to the blend door actuator, that was not fun, but do-able.

It's 6 hours by the book...Do-able in a day, I'd say.