Don't get a senior sales-person. Get someone who can transition into handling existing customers along with one or two of you. Then one or more of you can focus

Don't get a senior sales-person. Get someone who can transition into handling existing customers along with one or two of you. Then one or more of you can focus on sales. Then get a junior person who will grow with you. Then once you have two or three junior sales person, hire someone to manage them. A new guy coming in at a senior level will, in all likelihood, try to sell your service the way he sold whatever he was successful with in the past - and fail to sell your service.