Assalaamu Alaikum

I'm a new homeschooler too, this is my second year.  I can really sympathize with your questions.  I think that the majority of homeschoolers at WEHN, (now please correct me ladies, if I'm mistaken) are unschooling and  eclectic.  Eclectic just means that some subjects are more structured than  others, to varying degrees.  I am definitely structured though, so I'll talk to you about that method.

We try to concentrate on doing things from the Qur'an and Sunnah, but that's a whole lifestyle in itself.  To me that means putting the Qur'an in our  lives, and living out the ahadith.  So we clean together, we cook together, we worship together and we learn together....see how homeschooling can help  you to get all this?

My oldest son is 7 and in the second grade.  I have twins that are 3.5 too,  and they do little activities with Isa as they show interest.  They're
learning the alphabet (in Arabic) now, but I don't really push them, it's
pretty much when they come to me and ask me for "homeschool time".  We have  a scheduled day 4-5 days a week, where we have school about 5hrs per day.  If we get everything done in 4 days, then we try to do a craft or some reading he's been after me about.  Otherwise, we finish whatever's on my lesson plan for that week.  So in other words, the fifth day is my safety  net.

I make out a lesson plan every weekend, usually Sunday morning.  I put
exactly what work I want him to get through for each subject.  We do
Language Arts (Reading, Handwriting, and what I call Comprehension Reading), Math, Arabic, Qur'an, Islamic Studies, and then Science and
History/Geography.  The last two we don't do every day, usually twice a week each.

Qur'an we do EVERY day, even the days we don't have school.  Masha'allah, he's been able to memorize alot now and so we spend like half the time working on the new, and half the time reviewing the old.  It usually takes us an hour and a half per day.

Comp. Reading we do EVERY day too.  This is basically just me reading more difficult books to him, and then his demonstrating effectively he knows what I'm talking about.  We spend at least half an hour on this per day.

Arabic is formally studied every school day, and informally, throughout his life.  We watch Arabic tapes, we listen to Arabic songs, we communicate in  Arabic daily etc.

Language Arts, Math and Islamic Studies are every school day.  Sometimes for Islamic Studies we learn a new hadith (in Arabic and English) and he draws me a picture to explain its significance.  Sometimes it's just a matter of using a part of Islamic Adaab (manners) in a handwriting assignment.  We also read alot of stories about Prophets or from the Qur'an during this time.

For Reading, I do Saxon Phonics with him, and then I have simple readers that he reads aloud from.  I like Bilal Phillips' Eemaan reader series alot, we have the set.  And for Handwriting, I use the Italic Handwriting Series, by Getty and Dubay.  It has a regular Teachers' Manual and a workbook format, as does the Phonics Program.  I use Saxon for Math too, and it's the same way.

And then for History/Geography, and Science, I decide what I want to cover that year, and then I let Isa choose in what order he wants to progress.  We are doing World Geography right now, and then we'll narrow it down specific countries.  Since we're taking a rather cultural approach to Geography, he's not only learning about river and mountains (though that is rather important to me), but also customs, religions of the region, food they eat etc.  For Science we do the same thing, and we're getting ready to really get into  botany (we just finished insects-yuck! He loved it!), and help my sis-in law to make a huge vegetable garden.

Anyway, I've gone on for a very long time.  I hope that I kind of helped you get an idea of how you can do it, at least from the structured point of view.

I really wouldn't worry too much about the higher maths etc, because either you can help them to do these at home (Saxon Math for instance goes all the way up to calculus), get a tutor for the areas when needed, or wait and let  them take it in college.  And as for college, you can do a community college or not, as you and your children like.  Just have them take the ACT and SAT's when they are old enough, that's what the colleges require, and keep good records of what you've done with them...

As Salaamu Alaikum,
Um Isa (sorry I went on so long!)