The person who should be telling you what the options are is your solicitor.
I’ve read your post from the summer.
If your solicitor said “the starting point is 50/50 then adjust according to needs and relative finances” then that is one thing.
If your solicitor said you have to sell up and split the equity 50/50, then get rid of that solicitor straight away. They’re useless.
Long marriage, 3 children, you’re earning less. AND you own multiple shops so there are other assets to offset the family home. Why would you not let him keep the business properties so you can take the family home?
We can’t tell you what spousal maintenance you would get. If any. That’s usually where you need temporary support before they can earn again, for example if they’ve been a SAHP. If I were his solicitor, I’d point out your business is doing well and say no, it’s not appropriate.
I personally believe a bird in the hand is worth two in the bush with divorce. I’d rather take a guaranteed higher % of house, than spousal maintenance that could be varied. Or just not paid - it’s not easy to get it if he just doesn’t pay, and you KNOW he’s abusive and controlling. I’d go for a big % and clean break.
You can have a bigger % of the house AND spousal maintenance you know.
What did your solicitor say about pensions, and the existing businesses?