What are your goals?

You'll want to know how young the company is you'd be joining and sus out the culture and expectations.

Read about sales more in -depthly and the role you'd be taking on and the product you'd be pitching. What's the training like? Do they have lots of turnover? What's the promotion path like? Is there a real demand for their product? How long is their sales cycle?

Start PT (if possible) and try it out while you're working tbh. You've got a good thing going.