Heat gun followed by a Zar wash.
One chair stripped.
Next: Zar touchup and light sanding. Paint with Kilz. (1 hour)
Then: 2-3 spray coats of glossy black/charcoal enamel. (1 hour)
Recover the seats. (1 hour)
Total time for 4 chairs is 16 hours.
Spend 1 hour per day and I'll get it finished!!!