It's 80/20 - or it was. It's drifted a little, I have to rebalance this month.
I don't have any super-compelling technical argument for that allocation. I just put it into cFIREsim, and it shows a close to 100% success rate at the WR I want. I'm hoping to be retired for 40 or 50 years, and I figure I'll need a more stock-heavy portfolio than traditional retirees to make sure my stash grows and lasts that long.