600k U.S. Finance Contacts

I need between 300,000 and 600,000 clean, U.S.–based finance contacts extracted from ZoomInfo, LinkedIn, Apollo, or any combination of these platforms that produces the best-verified data. The list must heavily emphasize people who actually move money inside an organization—specifically Accounts Receivable, CFOs, and Accounting Managers. If you can also include solid records for Accounts Payable staff and Controllers without compromising quality, add them in. Here’s what I’m expecting once the scrape and enrichment are complete: • A single CSV or Excel file containing first & last name, current title, company, verified work email, direct phone (when available), city, and state. • All entries U.S. only, with duplicates removed and obvious catch-all or disposable addresses filtered out. • Final volume to land somewhere between 300k and 600k usable records. Please outline two things in your bid: 1. The mix of ZoomInfo, LinkedIn, and Apollo you’ll rely on and how you verify deliverability. 2. The record count you can realistically hit within the range and the timeline for an initial 1–2 k row sample followed by full delivery in staged milestones. Quality and relevance will decide the winner, so share bounce-rate stats or past successes gathering senior finance data if you have them.