It sounds like you're pre-idea, so one suggestion is to avoid building a "mission critical" type of idea if your desire is to stay solo and not be chained to your laptop...

I run a small SaaS where I had a decision early on to pursue a live chat-based approach to the UX versus an asynchronous approach. A big reason I chose the latter was to avoid the need for 24/7 "real-time" support in favor of a better lifestyle, even though the live version likely would have garnered more customers.