You can be so creative with home/Unschooling! Could you do 2-3 hours of "instruction" each day and your parenting partner do 1-2? Could you "teach" during evening hours after work? Some weekends? There are likely homeschool coops near you (or create one!!) that would allow you to teach a certain subject and then another homeschooling family could teach a different subject? Extracurricular experiences just = LIFE! Music lessons? Sports teams? Dance lessons? Woodshop classes? 4H or FFA? Trips to the grocery store? Museums? Farms? ALL OF THIS is learning! Isn't it wonderful!
Dr Ron Paul has a wonderful #homeschool curriculum available!