You want a 20% CTR? That's ridiculously high and even if the traffic and clicks are legitimate, expect a lot of Emails & Audits from Google. The average CTR is anywhere between 2%-5%. Some sites may be slightly higher but when you go over that amount you're going to run into some issues. Also, if you're averaging and legitimately achieving a 20% CTR, I'd be interested in finding out how you're able to do so.
DirectSEO