My partner and I have reached a stage where our software product is well received by the target industry. Both of us started this venture as a night-time affair and we still hold on to our jobs. We have a roadmap for the product which is essential for making it the best and unique. But due to this constraint feature additions are very slow at the moment and most important of all, the demos and sales activities happen at nights or early mornings (luckily target customers are in Europe and Asia as well) For prospective customers in US we take leaves.
Every time we have a discussion we calculate that with 30 active customers we will be at a point where we can make equal to what we make in our daytime jobs. When is the right time to take the plunge and get into it fulltime??