First, let me say....everyone here on VJ will tell you the same thing.....the wait is hell....but it is all worth it in the end!
Vanessa is a great source of information specifically for Aussies...so really listen to what she says!
I know how hard it is to get an idea of how long this will take. But have a look at my timeline in my signature and maybe this will help a little. We are also doing CR-1, so it should give you a pretty good idea (seems alot of the Aussies on here have done/are doing K1...so their timelines are probably a little different. K1 usually make it into the US a little quicker than CR-1, but they have more processing after they are in the US). We are nearly to the end of the NVC stage, but we are still expecting it to be another 2mths or so before I can go back to the US.
There is no reason why your husband can't come to the US to visit while your case is being processed. Three of my fellow December filers have done just that with no problems...one just got back from a 3week stay, and two have landed in the US in the last couple of weeks and will be staying for around a month. And of course, you could always come here too (although it is nearly winter here...so don't be expecting the pretty sun-drenched beaches you see in pictures lol!).
Just a question though - what made you decide to have your husband move to you instead of you moving here?? I only ask since you seem so concerned about him giving up his well-paid job in Australia to move to be with you. I figure you must have had a pretty good reason for it when you filed the I-130? Does that reason still exist? If so, then him giving up that job may have to be the compromise that needs to be made for you to be together. But who's to say he wont be able to find a similar position in the US? I am aware that I probably wont be able to work in the same position I am currently in when I move, and won't be able to earn anywhere near what I make here, but my husband moving here was never an option due to other factors, so that is the compromise that I had to make.
I have only been able to spend three months with my husband since we were married, and I wont be there in time for our first anniversary, so I can sympathise with you - this is definitely not the ideal start to married life. But I just try to stay focused on the end goal - to be back with my husband.
I really hope you can get things sorted out. I wish you and your husband all the best