Maximize Lead Generation: Email Strategies and Tools for B2C Success

Would love some insight here: if my TAM is in the 100k's, and I'm looking at around 20k to 30k leads per month, is the recommendation to focus solely on email? LinkedIn is an insane bottleneck... Also, if I'm looking for particular signals from my leads (I'm working B2C, looking for people who could be interested in a job change...I suppose that's really anyone), do the rest of you find it easiest to just use clay to prospect? Or are you using another source of truth (LinkedIn) and scraping? I ask because scraping, while more targeted, can get expensive. Should I worry about there being more noise within my lead list? Or view it as an opportunity to sell to a specific demographic of the online world (for example: senior software developers in the US who could be interested in a new opportunity?) Finally, is there a recommendation of a sending tool? I've been using Lemlist, but it is crazy expensive for 5 inboxes (it does provide multi channel access however...) TL;DR: