Keep us posted. You probably already have a good source or DIY for the headliner repair. At this mileage, I would plan on an AC refresh (receiver-dryer, possibly new compressor), since it’s straightforward and cheap if DIYed. Also, fan clutch may go soon; fresh thermostat and oil change to keep condensation out of the engine in winter. You may get an oil leak out the front of the engine at the oil pressure port - cheap, new gasket. Don’t be alarmed at CAN-bus weirdness - just patiently diagnose and isolate the actual culprit (likely right rear window motor/controller).

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Prost!