You and hubs need to sit down and carefully go over a budget and what could be cut and factor in the cost of living where you would be moving. Do they not have any gymnastics or extra-curricular activities where you would be going? It's very important to me as well to give my kids the opportunity to be involved in extra sports, clubs and activities, but look at it carefully. Many programs like the YMCA have GREAT kids teams that are very inexpensive (or sometimes subsidized and free). Your two youngest really have no need for any extra-curricular activities. City parks, hikes in the woods, hooking up with an area playgroup -that's all they need.
Is your daughter REALLY into gymnastics? Does she live and breathe it? If not, you may want to suggest trying something else. And like I said -are you sure there would be no gymnastics where you moved? Is she on track to go to the Olympics or do this competitively for the next 10 years and get a scholarship? It really may not be the end of the world for her to quit or cut back on gymnastics. She is only 8, and it's not like you're telling a 9th grader who is shooting to get that scholarship or has a chance at Olympic trials that she suddenly has to give it all up.
Birthday parties don't have to cost a fortune! People over-schedule kids at parties. I've had numerous parties here at our house and we only had some snacks, cake, ice cream and the "theme" plates and stuff. The kids just ran around and played and LOVED it! I've had kids on several occasions tell me the parties were the best they'd ever been to (probably because they weren't made to watch a performance, do a craft or anything -they just had freedom to play). Last Sunday we had my 3 year old's party at a nice local park and invited his preschool class. There were about 18 kids having the time of their little lives and we had cupcakes (I made), a few snacks, drinks and the theme party ware. It cost about $70 total.
As far as clothes -we can afford really nice clothes for our kids, and in my opinion, we DO get them really nice and cute clothes, but they're from outlets, super-sales, consignment sales/stores and swaps and hand-me-downs from friends. Again -your 8 year old daughter may be moving into the years of "must-have clothing" -but your others shouldn't be there yet. Cut other areas of your budget if you feel like they have to have certain brands of shoes or jeans or something. Check into the new town's school system to see if they require uniforms and if so, if it's just a certain style and color of tops and bottoms. If so, you will save tons of $$$ on clothes! If they have to come from a special uniform shop -probably not.
Each kid with a personal bedroom -not needed. My boys have their own rooms and we're putting them in one room this Christmas and turning the other into a play room/study area because they wind up in the same bed every night anyway and want to room together. Millions of children have grown up sharing a room, so it will be okay and help prepare them for college and roommate living on into their 20s.
And you're right about childcare and afterschool care costs for 4 kids. I only have two, but I do work full-time and so does my husband and my kids go to lots of activities, have birthday parties, attend parties, etc. They're not shorted on anything like that at all! Most of the parents I know work full-time and their kids aren't missing out either. Starting in kindergarten, the kids will be in afterschool care, and there are usually several extra-curricular activities offered for very low cost (or free). I don't know what your career and educational backgrounds are, but start sniffing around -especially if you haven't worked outside the home in awhile. You may be able to take something part-time that would only break even for you, but at least once the youngest is in school, you'll be set to get a job that will bring extra income.
I don't blame you for feeling ill toward your husband. Talk to him about several things -how long has he felt this way? Has something happened on this particular job to turn him sour? What about the same job/field at a different company? He does have to take into account the happiness of his family. Has he truly thought about what it will mean to cut the income so drastically AND move? Does he realize how much HE may need to give up (cable or satellite tv, nights with the boys, any extra stuff he likes such as video games or being on a softball team or woodworking -that type of thing)? Take a pen and paper and REALLY spell out everything. You may be surprised where you can cut lots of costs, but if it's really just not going to work, he's going to have to find some other solution. And another thing he needs to consider -if he's going to become a police officer (you just said law enforcement, so I don't know) -he will spend some time at the beginning on the worse shifts (nights, weekends, holidays). Is that going to work for your family? Just try to stay calm and not let discussion dissolve into fights. It may help to see a counselor together just to talk through this chapter in your lives so you don't start fighting about it constantly. Good luck!