I was kind of like you when I was pg. I kept telling myself that, at worst, it would only be full on for 3 years then they would be at school every day. Dh really didn't want them to go to school. We kind of ignored the issue for the first couple of years, although I did investigate various possibilities for school (dire in our area, unfortunately)
When ds1 was 3, we explored the school options. We tried one alternative school (actually moved to do it for a while) and then dh and ds1 together decided they would rather home ed. I agreed, on the basis that we would review it over time.
Several years on, and both the dc are home ed, and I am even doing a bit of the teaching now, although dh still does the vast majority. Dh still accepts that as it was his decision, the burden of teaching will be with him and anything I do to help is as and when I want and only if I want, and is appropriately grateful for any assistance. He even teaches them my mother tongue, although he does nag me a little that I don't. I still occasionally get saturated and feel like I have been manipulated into the situation, but on the whole it is going really well so I am basically a convert.
We both work (somewhat seasonally) ft, but from home, and the dc have got used to getting on with their stuff while we work.
I agree with the viewpoint of kicking it forward, but with the proviso that it is clear that if he wants to hed he has to take the lead, and you may support him as and when it is possible for you. Unless I had been fairly confident that if we did end up home ed it would not be up to me, I would have found the issue very stressful indeed, so I don't think you are wrong to want reassurance on that.