I have an SD Cool Rail in the bridge of one of my strats. it is great for Hi gain but not much twang !!

I also got me a shielding kit from Stewmac.com. If you intend to do the entire cavity as well as the back of the scratch plate, get at least 2 !

Avoiding computer monitors, fluorescent lights and TVs will also help. Even just turing your PUs away from them !