How to find high adsense cpc keywords and niches

Hi every one,
I am john web master since 2 years.I have interested in earning through ad-sense so i picked up 17 keywords related to "car insurance" and according to Google ad-words keyword tool estimated cpc are as below:


Keyword USA searches monthly CPC according to Google ad-words tool
car insurance (1500000) $42.84
car insurance quotes (165000) $59.61
car insurance quote (165000 ) $59.71
car insurance cheap (165000) $48.09
cheap car insurance (165000) $46.35
cars insurance ( 110000) $39.05
cheapest car insurance (110000) $46.17
auto car insurance (110000) $39.77
car insurance companies (60500) $58.37
car insurance rates ( 60500) $51.57
new car insurance (60500) $53.62
car insurance prices (49500) $55.86
car insurance rate (49500) $51.34
best car insurance (40500) $60.09
car insurance company (40500) $44.17
cheaper car insurance (27100) $54.49


If we optimized a website with this keyword and if we ranked top position in Google.com how much Google ad-sense pay yous avg cpc for each click a visitor who clicks on my website and to get maximum CPC how to optimized better???? and how much can we earn through ad-sense per day with this keywords
Please guide me if any one had any good experience with ad-sense niches are keywords which pays more please suggest waiting for your replies
Thank you

 

Wow, but these keywords are too competitive, rmb what we adsense marketer looking for is low competition keywords with high CPC.