[throwaway420]

Without having lots of data about your current system, business resources, business health, runway, expected growth, technical challenges, income, expenses, and other constraints it's very difficult for an outsider to come up with an informed decision on how best you can proceed given your unique set of circumstances.

[nRike]

I agree with that. In the more general sense, do you think is a good approach doing monkey-patching, for a startup whose already made their first sales? Lets say we just raised money from an accelerator and no taking outside investment than that.

My main doubt about that is, do you think is a good approach to keep doing crappy code even if we're already doing money with this? And if not, when would be a good moment to start refactoring?

[brudgers]

Somehow I doubt your customers are complaining about the quality of your code and if you are making money there's no business case for rewriting code.