I wouldn't really use google to find an independent; I'd browse the review forum for SPs with good reputations. I'd wager very few use google to find independent escort ads and that most calls and clicks are directed from listings sites. If you're looking to expand your client base maybe consider advertising via other classifieds?
If I were a hypothetical client who didn't know reviews existed, I'd be flooded with ads get and be used to filtering out misleading/meaningless words. GFE/PSE, open minded, slim, gorgeous, busty, young, horny, etc. are all ignored since there's no clear definitions for any of these terms and are often lies.
The perfect ad title for me if you believe in yourself would be "(age) (hair color) (ethnicity) (location) (incall/outcall) schedule and pics"
The perfect ad title to deceive someone into clicking on your ad would be something like "Ex-gymnast (lie about eye color) porn star nympho with twin sister (lie about limited availability) CALL NOW"
hope this helps