Don't do campaigns with mailing list which everyone is using. Rather create a new one based on your exact match. Trust me the result will be far better.
With your list you can play around and get maximum result.
I can be of help as I have the power of technology and research techniques. I can provide resources for business intelligence, data extraction and web scraping using digital strategy to reach a target specific to your business’ needs.
What is your exact match?
I can work around and share a sample data set.
Interested ???

there are a lot of scrapers out there that you can utilize to scrape websites like Linkedin for the prospects you chose.
try http://localscraper.com/ for that.

Depends on how big the companies you are targeting and the industry. You can either set up an internal process for sourcing leads and qualify them or you can purchase leads from a reliable company. Try http://growthok.com for that.

Make sure you do your research on the leads and find personalized data because CFO is one of those roles that's tough to get a hold of, but there's a lot of strategies behind it to get around and create multiple touchpoints. Get creative and have a solid process.