Hi B.. I'm a fellow older mom who has found some things that work for our family.
In terms of keeping it all together at home, I would recommend the FlyLady. www.flylady.net. She has a (free) system of spending just a little time each day to keep the house tidy, then one day a week to "bless the house" for one hour. Each week is dedicated to an area, and each day a particular task. 15 minutes is about it each day.
She recommends building a menu for the week and going grocery shopping once for the week. This has been a life saver for my family.
We do one load of laundry a day to keep up.
She recommends getting rid of clutter. We've made great progress, but still have a ways to go.
She also has friends. The one friend I've just joined is Jonathan for the No Excuses Workouts. Look for his link from FlyLady. The idea here is to start small, but doing something nearly every day. So 3 days a week it's cardio, and then 2 days a week it's a strength training (starting at 6 minutes). For the cardio, it's about doing intervals to bring the heart rate up for a few minutes, recover, then do it again. You're done in 25 minutes! I started exercising for only 10 minutes each night, but have built up to more. I've been watching what I eat as well, and I'm losing weight with excercising only a little bit each day. You can get Johnathan's e-mails and do his stuff for free, or he has a system you can buy.
Through all this my life is becoming more organized each day.
The e-mails from flylady can get to be overwhelming - so I'd recommend checking her website each day instead. Both she and Johnathan are through BigTent, and I'm sure there are links on her web site for it.
Best of luck!