OK, Z, I understand the anxiety, but you gotta put this in perspective. First, and most important, even if he gets way more than he "deserves" YOU are gonna be OK. You won't be homeless and out on the street. You won't need to go on welfare.
Second, it doesn't matter what he's "willing to accept"--once it's in the court's hands, he has nothing to say about it.
Third, the cost of the lawyer has nothing to do with who wins. There isn't that much to spin here. It looks like it will be a pretty straightforward equitable division of property. Neither one of you will be 100 percent happy--that's inherent in having someone else decide. It's OK, really.
Try to take the anxiety down a few notches. You will do your best in court if you are calm and reasonable, and not acting like your world will fall apart if you don't get everything you're asking for. It's a big deal, but it isn't life and death--really.
Don't worry about what he says/does. The truth DOES count, but you have a much better chance of having your truth heard if you go in serious and determined, yet calm and rational. Let HIM look like the greed bag that he is.
Hugs,