Best place to launch a team focused app that sits between engagement and productivity?

Hey all, wondering if anyone has had any experience with this, but I've been working on https://cadrelo.com/ We want to take things slow and have 5 friendlies (teams) go through in our alpha stage. Then before June take on probably 5 more teams. I'd love for us to target tech, software or delivery teams to start with then broaden out to any team? What is your suggestion where I reach out to team leads and those kinds of individuals that would want to trials something like this in their team? Also what would your approach be? Thanks in advance!!!