that's too risky .. I never told anyone about my adsense blog .. but here's the info, my niche is all about loan, credit and mortgage ..
Insurance has high cpc, but I never get any click from this niche. I normally get paid from the niche about engineering.
Research what people are searching for online. Sell items that cater to that specific market. If it goes well create and sell your own product.
If you will choose a high paying niche you are not interested in.Very soon you will get bored with adding fresh content to your blog.