You have been driving around since July and just found out that you have an electrical water heater? Did the Dealer not tell you that during your walk through? What other things were you not told or may not paying attention to? I commend you on your desire to home school your children, but I think that you may need to get out every book and brochure that you have and learn a lot more about your 'Home'. The life of you and your family may depend on it. Learn your electrical systems. Learn your gas systems. Learn your water systems. Learn of the maintenance that you will need to do to keep everything in tip top shape..... This is your home and you need to and had better learn how to stay on top of it. Not being critical, just giving you encouragement to know what you have and how to know when something is wrong and how to fix it.
For 99.5 % of the rest of 'us', if something 'breaks' we have a 'home' to go to and can get it 'fixed' days or weeks down the road. You may not be able to do that.
Good luck and be safe and have fun on the road.