In software, there's quite a few other questions to answer first.

Will you be on call?

Whats the culture around "off-hours" contact?

How often if ever does crunch happen? Will the company pay more after 32 hours?

What percent of my time is expected to be in meetings vs getting things done, and how much do you expect to be done?

I have worked at places with all fridays off during the summer. We did all our releases on time even though summer was usually the biggest time. 4 days really doesn't seem to make much of a difference at all. Fridays are so often either no meeting days or at least not important ones. Overall, I absolutely have taken a paycut for legitimate work life balance increases, and I prefer to work with others who would as well.