Finding Company Owners and Mobile Numbers: Best Strategies for Accuracy

Hey everyone! Clay newbie here with a pretty easy question. I have a list of about 1200 Companies who I need to find the owner / DM and then waterfall into finding their Mobile phone number. What's the cheapest, but most accurate way to approach this? I was going to use the Find and Enrich Person from Google Search (2 credits per row) Then waterfall into Find Mobile number from Nimbler (2 credits per row) --------------------------------- Is Nimbler pretty accurate? Do I need to find and enrich person first or can I go directly into finding numbers based on another trigger?