If you get that far:
Might as well replace all the bulbs in the dash (instrument cluster, HVAC control, etc.)
I found the plastic in the base of the bulbs deform over time, and the bulbs no longer sit tight --- had to dump the base and bulbs at same time.
Also clean out accumulated dust back there and wiring contacts cleaned with circuit board cleaner and greased with dielectric grease.
The doors consider adding insulation in between the factory plastic liner and the plastic --- greatly improves sound / road noise as well as hold in the heat.
Likewise, add insulation to the step.
All insulation has to be wrapped in between plastic and sealed to prevent it from accumulating moisture.
Consider lifting seats and then adding new padding / insulation / etc. on floor.
Insulation, in sealed bags in dash really helps with noise.