Deleted A/C have important question

I took the freon out of the system and took the condensor out today. I am planning on leaving the compressor in for now. How long can you run it "free wheeling" the compressor pulley?

Indefinitely.

IMO, other than weight and appearance, there's no reason to remove it. The pulley is free spinning and adds no more load to the engine than what a tensioner does. If its siezed up, just unplug the compressor and drive on.

You could just leave it as is. the clutch will not activate with no refrigerant.
Just disconnect the plug in to the compressor and you should be fine.