I'm thinking well ahead here given that I'm currently pregnant with our first

However, we would intend to home ed our child from the start, only moving into school if it suits later on. How practical is it to have a part-time working/study life with a home educated child? DH will be working full time and will likely be doing shift work on and off for a long time to come yet due to the nature of the work he's going into, so we wouldn't be able to rely on his hours at work in terms of fitting childcare/my further education around it. I'd like to go back to university in a couple of years time so would still be there once child reaches school age.
Obviously childcare is simple until they are school aged but what do you do then? Are many childminders open to having older children during the day or would we have to think about childcare based at our home?
And is it fair to home ed if the main carer (me) won't be around for 15-20 hours of the week during term time? That's how much time I'd need actually on campus, obviously I'll have more work to do at home but we can work around that element more easily! Even if I did a degree via the open university I'd have to have some form of childcare, though it'd be more flexible obviously. Would we miss out on local HE socialisation opportunities? Are HE groups open to relatives or childcarers bringing children to HE sessions? I am currently a nanny and I have worked with a HEd child but we didn't do anything with the local HE groups on my days with him so I have no idea what the vibe towards childcarers is within HE groups, there was a pretty negative attitude towards childcarers when I was involved in other alternative education settings so it's a concern of mine.