Welcome to the forums and I hope you are successful with your future plans.
Not to discourage you, but something you must fully realize, to go RVing for any length of time takes a lot of planning and coordination. I strongly advise you to purchase your RV right now and take it out on week-end camping trips so you'll learn the ins and outs of the RV lifestyle and be better prepared when you cut the umbilical cord from your stick-n-brick domicile.
Each time you take the camper "out" you'll have a new experience and new challenges. Yes, after a while those challenges are just part of the everyday experience, but before they become "hum-drum", they can be mind-boggling when initially starting out. So, taking a year in advance to learn the ins and outs of the RV lifestyle. It is a learning experience that will prepare you for future success. Start out with a couple week-end "outings" and then extend the time longer and longer. You WILL want to experience cold weather camping before you are caught in cold weather with no escape. You will want to experience camping with no electrical hook-ups before you find yourself with no other option and you were counting on electricity. You need to be prepared to find water sources if you are planning on boon docking, and dumping your sewage waste in acceptable ways and locations before you find yourself one day with a full tank of waste and don't know how to deal with disposing of it.
If you are planning on home schooling your children, you'll need that plan in effect before hitting the road. And the kids will need some opportunity to adjust to living in an RV full time so they are not shocked, feel trapped, or become resentful by being thrust into it.
Everyone in the family must be on-board for this type of adventure or it will be a nightmare. If one of the kids don't like it, that child WILL make life a living he** on the road. If the wife is not 100% supportable, adaptable, bendable, and willing for change, it will be a nightmare. And you must be just as supportive, adaptable, bendable and willing to change, compromise, and give in too.
If this is your dream and the entire family is on board, and then after a few weeks YOU find yourself being stressed to the max, the experience will turn into a nightmare for everyone.
That's why you need to get the RV right now and take a year traveling on short excursions and experience the "crammed up life" and the "life of no privacy... anywhere" ahead of time. This way, you can retreat back to your stick-n-brick, regroup, and try again without feeling "trapped" that there is no other alternative now, and things turn sour.
Granted, many folks jump right in, starting from scratch, having never even seen what a tent looks like, let alone an RV. The magic and the thoughts of the nostalgia of living free, roaming the country, and not having to be answerable to anyone does work for some who have never done it before. But far to many experience the shock of the lives when they discover just how much money it costs to live this way.
This is why I say, and advise ... start right now and get the experience, so a year from now you are ready and prepared in all directions: financially, emotionally, and environmentally, yourself AND your entire family.
You want success, and if you plan it right, do your homework, practice, talk with your family, prepare for a plan-B (an exit strategy) and financially prepare, you'll have that success! But, it doesn't just magically happen. It takes a lot of sacrificial work on every one's part.
