Put it on CodeCanyon if you want. There's a lot of similar software there that get a lot of sales.
Also make sure you have paperwork in place that gives you right of IP. Given that the past IP was owned by your company, this is not merely a handshake and email.
Also make sure you have paperwork in place that gives you right of IP. Given that the past IP was owned by your company, this is not merely a handshake and email.