I homeschool through Minnesota Virtual Academy, which is part of the K12 program. I have done it from the start, and my oldest is now in 2nd grade.
I won't get long winded...I will simply say that I LOVE IT.
However, it does require teaching on your part...it IS homeschooling. Your husband will not be "supervising" the virtual schooling, he will be TEACHING it, until they reach about 5th grade. The virtual "teachers" don't do much...I'm in one of the best online programs there is, and my daughter's "teacher" (and I use that term loosely) holds a meeting every Monday, which is a bunch of fluff...does reading fluency checks twice a year...and hosts a little session on math and reading each week for those that aren't passing their standards.
However, what do I do? I teach math. I teach history. I teach science and help with the experiments. I teach Language Arts. I administer every test. I help with studying. I set up art projects. I grade her work. I turn in work samples every month. Sure, there's SOME stuff online, but I am the one teaching it, and at this age, most of it is done at your kitchen table.
It isn't like you set them in front of the computer and someone teaches them things...it's homeschooling all the way, except you are provided with the curriculum and basic lesson plan and are held accountable to a school district for attendance, grades, etc. It's homeschooling with an accreditation, basically. If you don't have someone who can dedicate at LEAST 3-4 hours a day to this, please don't consider it until your child is older.
(I do want to clarify for anyone who is confused...we can work at our own pace, but you do have to complete approximately a year's worth of work in a year's time. You do have the flexibility of saying...this week, I don't want to do science...we'll do double lessons next week.
Would also like to add that I love K12's curriculum, but I also hated their music program and because I am a classically trained professional musician, I simply clicked through all the lessons, marked them as complete, and chose to teach my daughter myself.)