Your plan sounds good overall. Here are a few notes:
We are not familiar with Provado, so we couldn’t comment on its effectiveness as an insecticide.
Regarding isopropyl alcohol: Use a very diluted solution if you plan to spray your entire plant. We recommend a ratio of water to alcohol no larger than 5:1. For spot treatment, you can use a stronger solution.
Before you spray or wipe down the entire plant with your water-alcohol solution, test it on a small patch of the plant first. Let it sit for about a day to make sure that the plant has no adverse effects or that the solution is too strong.
In your treatment plan, repotting the infected plants should be one of the last steps rather than the first. First, check the plants for pests and remove any that you can see. Second, use your water-alcohol solution (after testing it previously). Third, let the plant dry off and then remove heavily infested segments. Finally, repot the plant in fresh media and a clean pot.
Regarding your prevention plan: We would not recommend watering with any solution that has isopropyl alcohol in it. A solution of water and a horticultural oil, neem oil, or systemic insecticide would be OK, however. Use these products according to the instructions on their packaging.
As you know, you will need to be diligent about checking for new pests and applying a solution to the plant. Eventually, you should be able to beat them! Good luck!
Your plan sounds good overall. Here are a few notes: