Hi tom, if you're using meds then I would forgo using salt.
Ich if treated correctly can be easily dealt with and when I read what you have to go through, I can't help but think you're just making more work for yourself, plus if you shut down your filter, you will most likely lose all your good bacteria and crash your cycle.
When I had an outbreak of ich i simply took it one step at a time.
1- I added the first teaspoon per gallon (salt)
2- 12 hours later, i did the same again
3- 12 hours later, the final addition of salt - 1tsp per gallon
4- Once i had my salt level to 0.3%, I added the heater and raised my temp to 82degrees
5- I vacuumed the gravel daily and replace the salt I removed in the water removed
Then I waited.
I didn't strip down my tank or turn off my filters - I didn't have to. And this is why treating with salt is the simplest and most gentle way of doing it. There's no damage to your good bacteria and the salt is gentle on your fish.
Most ich meds contain malachite green so keeping the lights off while treating is important otherwise the meds are rendered ineffective.
This is how I would have tackled it