My take on it: whichever route seems best now, keep an eye on it and stay ready to change. Dont get in a rut. Raising children takes a long time from birth of first to nest flying of last. The long game means not letting yourself get locked into what's best now long after it isnt actually benefitting you.
I have been a parent since 1983 and have at least 10 more years until my youngest moves out (though he adorably assures me he wants to buy the flat upstairs and stay very close, when he is not stomping around insisting he will move back to Be American when he is grown up.)
A lot can happen. I have been a penny pinching SAHM because I earned less than childcarers, a full time worker, part time worker, career changing student at mid-life working odd jobs related to the course. i have supported a spouse through graduate school, from when his VISA only allowed him to be a student (though he had funding, we werent paying for school) to the end when his field went through a hiring slowdown just as he was graduating and he was working via temporary agencies). i have worked when my salary was completely superfluous (wish i had saved more those 3 years!), and I have been the only wage earner. I have been the only parent at all and have been a SAHM here at the end.
When i met my husband, i was raising 2 children whose dad had left. We discussed on our first date our joint preference to not have children until one of us could stay home. That took 14 years, I now have been at home for 7. After our son started school, and then we moved continents for DHs career, and we spent a year with me making too small a flat work, we finally discussed my going back to work a few weeks ago, after we finally bought a flat. My 2nd career was chef in the years before our son was born. In this country and after all this time, I would have to take several steps back down the ladder, but even at best, it's long, odd hours. We can't see a long term benefit to creating the constant childcare scramble two careers on incompatible time clocks would create; and it seems our son needs more educational support than his sisters did, which would add to the scramble. My career is unlikely to reach top salary in culinary work & my office admin experience is over a decade out of date, but spouse is mid-career with a great deal of potential. Our current view is my staying home allows him to play the career builder more profitably and gives our son his best chance at certain options. We will look again in another year or two, meanwhile, I am casting about for volunteer work and coursework that could be developed later.