My wife and I highly recommend a nanny, even a part-time one. You can find them cheaper than you would expect. We were in a similar position as you, only we both ran businesses out of the home. Our solution, we hired a nanny who lived with us except on weekends. With a nanny your children are cared for in your own home, a safe place. You can also insure that they are cared for by your standards, and you can take a break to play with them whenever you want. You don't have to get a full time live in nanny, plenty of them will work 8-5.

Your best luck will be with high school graduates who are not immediately headed to college, and are the type that look forward to settling down to have a family of their own. Our nanny was a very sweet girl who had no means to attend college and I would guess wasn't a strong learner but she was clean cut, quiet, had a heart of gold and loved our daughters and cared for them so well. It worked out perfectly.