You've got some good responses...We live south austin but I know that this option is out there if you can just make the connection. I know of women who homeschool their own children and also work...they just find jobs that have time schedules that work for them and find supervision for their children for the time that they can't be at home. I know there are academic co ops and probably field trip co ops (ours, S.Austin, is free except for the cost of the trips themselves...and many of these are free) in Round Rock. I think there is a P.E. group that meets north, google CHAA, it meets for 3 hours at a time and the kids have a blast, and get some exercise/play games (this is about $70 a month.) There are park days around the town to play on Thursdays or Fridays. The challenge to home schooling this way is all the running around. You start to think: "Why don't I just put him in school its under one roof!" So we choose to handle academics at home and pick one or two activities to supplement (music and p.e....and a field trip once a month...we're doing church and scouts too...o ya...AWANA...(Bible memory) ...ok we're doing way too much but some of this is on the weekend. If you could find a couple college students that could do your running around and to supervise work (while getting some of his own studying in?) a couple days a week it might fill in the gap.
We like Sonlight Curriculum because it's literature based and is easy to use...my husband likes to do read aloud books when he comes home from work, so I save some of these for him to do. The kids really develop a love for reading. The books are that good (lots of Newberry award winners.) They are generally grouped by a historic or geographic theme. They've recently revamped their Language Arts program, and have suggestions for Math and Science. The cost looks more than some other curriculum, but I think is still less than private school for a year. www.sonlight.com
I've used www.rainbowresource.com to find reviews on math curriculum ETC (warning: they carry a lot--in print form its the size of a phonebook-- and it all seems good :) We use a combination of Letz Farmer's Mastering Mathmatics (games and math fact mastery) and Making Math Meaningful by David Quine...this one is scripted and for older students can be self taught. We're also starting (6th grade) Life of Fred math (what a hoot!) and will probably stick with it up through Calculus.
For purchasing new resources I think the two I've listed have some of the best prices...unless you want to do the legwork and compile it all yourself, and that's a whole 'nother set of time commitments.
Check out Texas Home School Coalition for information on withdrawing and requirements in Texas www.thsc.org
Looking forward to hearing what you decide after all this information comes your way. Blessings to you!
OH! I forgot to say that I know my neighbor home schooled with a couple of friends...she took in their children and they helped her out with things around the house and paid a little too...especially to cover the cost of curriculum etc. So another place to start is with your own friends...see if they'd be willing to help.