Hi, Wally. Citristrip is an environmentally safe, non-toxic stripper and a good product but there are other similar ones. I strongly suggest that you do not use methyl chloride based strippers. They might work faster but are a lot more dangerous. I have also heard that there is some new evidence that they might be more hazardous than previously believed. Caustic based strippers like Peal Away are also good products but expensive for a relatively simple stripping job. With a lot of walls to do, you might not feel that that is true. Sounds like a simple job, just a lot of it.
When you start stripping paint, don't start on too big an area at once. 2 ft. x 2 ft. is about right. Get a feel for how long the stripper takes to work--until the paint starts bubbling, and how long it takes you to get the paint off that section and work accordingly. You can leave Citristrip on for 24 hours with no problem but it does start to get hard to remove after that. You can use a putty knife on the flat wood and one of the stripping pads made by 3M or Citristrip for the molded parts. You might also search further here for more info or check out Citristrips site--www.citristrip.com.