A lot of founders underestimate the importance of sales people early on. Suster has a couple of good pieces about start-up sales people vs corporate sales people (they are very different skill sets). My biggest concern would be outsourcing the feedback loop that is created by those initial sales calls. The salesperson is your window to customers and your compass to finding product-market fit. It's so critical you often see founders taking on the sales task first-hand. Obviously that doesn't scale and I believe that's where you guys come in!
I would really need to see how you're providing me sales call data and feedback. A screenshot of a dashboard, spreadsheet or something. Allotted phone time with the sales people to discuss what they encountered in the field. Anyway to formalize sales feedback would be of great value. Good luck!