Bathroom Remodeling Question?? (d.i.y.)?

Seeking professional advice from fellow D.I.Y. folks. I am starting a complete bathroom remodel, What should I start ripping out first? We will still be using this bathroom off an on if needed, as a guest bathroom. Everything is coming out at one point.But I am not sure where to start. I am replacing or getting rid of the half paneling, the lighting, sink and huge avocado green vanity & cabinet, toilet, floor, wall paper under the 3 or 4 layers of paint, ceramic tile in the shower, and finally the bath tub. What would you start with??