LinkedIn Sales Navigator Contact Development

I have a list of approximately 150 companies by name and website URL for which I need a list of contacts created. My expectation is that LinkedIn Sales Navigator will be used to identify people and then other online tools will be used to extract/estimate/guess email addresses of those contacts.

I will provide the list of companies and a few keywords that should appear in the titles.

I do NOT want a long list of email addresses that will bounce. I'd be happier to receive a shorter list of high probability email addresses within my target companies.