How can I get started with Clay for our SDR motion?

Hey team, I have been mandated to redefine the SDR motion at my co starting with very lightweight tasks. We currently have LI Sales Nav, Apollo, 6Sense + 6Sense conversational e-mail. Our e-mail deliverability is 96%, and I already have a book of business with 8 thousand accounts but not beholden it. Ultimately, I want to generate more meetings from the universe of buyers. I want to experiment with Clay for the next couple of months and would love advice about how I can get started and whether I do need SmartLead / Instantly on top of what I already have. H/T to Yash T. for being an awesome resource so far 🙂