Ask HN: Just quit my job, with zero traction on startup

Today I officially quit my job. I was unhappy. I was told to "tough it out" by many, and I did, but it only became worse. So that's done, I left.

My startup still makes $0.00 in revenue, but I've at least finished coding a Beta version of my SaaS app, and literally only a few days ago started to blast off some cold emails and also recorded a product demo.

I have a good 7-8 months of runway.

If need be, I can cut down my burn by half by giving up my lease and moving into shared housing. If it comes to that.

My question is what should I do now?

1) Immediately look for another job, plug the leak ASAP, runway notwithstanding, and still work on the startup on the side;

2) Give my full-time focus to getting some customers for my SaaS app, make it work, get some initial revenue traction by hook or by crook. Just swim or sink; or

3) Adopt a hybrid approach -- give it a month or two of just full-time focus selling and finding customers. By the end of that "trial" run, I'd either have enough revenue to survive (probably not), some revenue to show for my efforts, which would justify burning off another 2 months of expenses, or no revenue, so I'll start looking for a job again.

Anyone been in this situation before? What did you do, how did it turn out, and what would you do if you find yourself in this situation again?