Factory AC Dart and options

I hope everyone’s having a good weekend. So far I’ve done a lot to my 100% stock Dart and it’s proving to be very reliable.

The Dart (1976) has a factory AC and the original owner told me it hadn’t run in 10 years, but he never repaired it since the far just mostly sat. It’s getting hot here in FL. Where do I start trouble shooting? I don’t here the compressor turning on.

I’ve been searching these forums and google and most posts are people:
1. installing aftermarket units on non AC cars
2. Their AC cars are missing components and are forced to install aftermarket
3. People taking the compressor out and getting the oil out and replacing seals and adding r133
4. Install a Sanden clutch style compressor and components.

I’m tempted to go with number 4. Is this a simple plug and play? Has someone in the past posted a link to itemized parts and process for doing it?

Really don’t want to just throw money at it and not know what I’m doing. I’ve attached pictures of my setup (stock). Any suggestions?

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