I think you need to ask your Husband whether he really wants to do it. If he doesn't now, right after you got back - then he really doesn't. If he does, you should sit down and work out the time it will take, the costs of moving, the costs of not working for 3-6 months, the implications for careers if you take a step back. Then work out how to do it without selling your house - can you live for 6 months after the costs of flights and so on? how would you come back if you spend all your savings?
It is a hard decision for those of us with Australian Spouses, and they want to go home!