and what's your answer?

To most women, the man earning less will become a problem. She tends to lose respect for him and lose attraction. The woman won't outright say that its because of the difference in pay, but she will find him more annoying and have way less tolerance for him as she views him as lesser. The man will need another strong marker for social success to counteract this.

Most men don't mind the woman earning more. There are some that are insecure about it, but most men would gladly accept it... though these are not the type of men you want to be around anyway.

If you and your wife earn enough, then the risk is worth taking.

Just plan accordingly with clear plans on markers to exit. If your pay is currently good, it must mean your skill set is sufficiently unique and desirable. So even if your venture fails, you can still apply for a job and get hired like Ralna has. You're at the age where you can take some risk and benefit greatly from it, and also have time to recover if things go south.