That’s a lot of movement, but it’s in the right direction. Toe out on droop will help the inside wheel steer into the corner reducing under steer. I’d try dropping the outer mounting point.
Exactly! If you're going to have bump steer, better to have it in that direction.
Like everything with setting up a suspension there are always trade offs. Sure, bump steer is bad in general and you want to minimize it as much as possible. But not having enough positive caster can be bad too. So can not having enough negative camber. And the camber curve matters too. Some of those things can be a trade off, it's a balancing act that changes depending on how the car is used, how it's set up, and even the preferences of the driver.