You know everything is possible but a situation like this makes it a lot harder. First off, young kids (<6) need parenting attention. If you want to go hardcor

You know everything is possible but a situation like this makes it a lot harder. First off, young kids (<6) need parenting attention. If you want to go hardcore working side-projects and a fulltime job OR more than fulltime without income then that's going to push a lot of the work to your wife. Even if she's fine with it, usually your kids aren't. After 6 it gets easier. Second, founders that have investment do get a salary so it's not impossible. However, the fundraising climate just collapsed and it is harder to fundraise today. Third, it's not really necessary to build technology to fundraise though.. what's more important is to convince the investor that there is a genuine need for what you are building and that you have a team that can get it in the customers hands. The best way to do that is with data from potential user interviews backed up by clickable prototypes of the product. You don't actually have to quit your job to work with designers and conduct user research to figure out what you're thinking of building makes sense and it's trivially cheap to hire user testers online. Talking to potential users and building out the prototypes is not a fulltime job. From there the insights alone should be enough to convince your wife, angels or accelerators to take a risk on you to build it. VC's will only come when you have graphs going up into the right. So yes, keep it a side hustle but don't program anything... iterate on prototypes instead.