Yes.. the Naptha etc in regular mothballs can be absorbed by the wax.. I try to stick with Para Moth.. Your plan is sound... It is what I have read as recomended, and once DID myself..
As mentioned, I now put crystals on TOP of the stack.. I run about 6 Medium boxes per stack. Lid or tele cover under them with a contractors bag under that.. I put a plate on the TOP bars with the crystals on it and tie the top of the contractors bag.. This way, I can check the crystals in the spring if I am not going to be using the supers/that particular stack etc, and add more crystals if needed, without unstacking them all to get to the plate...
I also keep my supers out where it gets COLD... so.. basically I put crystals on when they get removed after cleaning and wrap them.. by the time the crystals need replaced its COLD outside and I have no more wax moth issues.. I do not usually have problems EARLY in the spring with wax moth, so typically do not unwrap my supers until a week or two before I need to set them on.. That week is enough to air them out and let the moth crystal stink dissipate.