Almost anywhere with 8 Years airline experience....
Based on the fact that you say you were restricted I'm guessing it's an EASA/JAR qualification which is reasonably useful worldwide.
With suitable IFR time, I'd work at becoming unrestricted, then complete the IRI add on to the FI. If you have 30 hours P1 MEP (and thence CRI ME) then that would make you very employable almost anywhere.
Question is though, why? After 8 years airlines you're probably used to a 'reasonable' income.... Even top notch, top of the tree instructors aren't going to make anywhere near as much as an airline FO with that much time in post....