How does NOT homeschooling other kids affect HOW I homeschool Fionn

I have to say that I toy with the idea of homeschooling Nora, because I see the flexibility homeschooling all the kids gives to the whole family.  In some ways, Fionn and I are fairly limited because of Nora being in school.  We are limited by the hours she is in school ("let's hurry and finish because Nora's almost done at school and then I'll need to focus on her homework, etc.").  But we are also limited by the days she is in school.  It is hard to take trips (supposedly one of the benefits of homeschooling -- traveling off season) that don't interfere with Nora's school schedule.  It even makes local field trips (opportunities for which are plentiful in this area) difficult because we are always up against that 2:30 deadline.  We have to be back to get Nora at school. Sometimes it is tempting.

That said, it is nice to focus on one kid at a time.  I keep telling myself that Nora can have her turn in middle school when Fionn is in highschool and college.

The other consideration is Nicholas and preschool.  He NEEDS to be in preschool.  Besides the fact that he begs to go to school, I have found it impossible to effectively homeschool Fionn AND keep Nicholas engaged.  I know plenty of homeschool parents do it.  For some reason, I just can't split my attention that way.

So...yet another schedule hemming us in.