be sure to correctly weld any broken pieces or replace missing bolts n nuts from the front of the car, The radiator support is also supposed to be black. It ensures a nice clean look when the car is fully reassembled. If you can then make a duct for your radiator/condenser - you can buy ABS plastic sheets and make it now by test fitting the bumper. It will ensure that all air hitting the grille louvers gets pushed through the condenser/radiator - this car originally comes with them, but over time they are either misplaced or broken off.
The inner parts of the doors should be kept clean, paint them. Then cover the inner door skeleton with plastic to prevent your interior getting humid and hot.
Fully clean out and overhaul your HVAC box - that way when everything is put back, you'll know theres no filth in there.