As for point 2. For any space project for resource gathering you want to stay FAAAR away from any major gravity wells as escaping them is currently 99% of the cost for our current rocketsm it's genuinely wasteful in terms of fuel and most of the rocket is shed afterwards too.

Gravity wells would be one way delivery only while resource gathering operations, as you said, would stay on dwarf planets, asteroids and lesser moons like our own.

Just felt like giving an explanation to your post for anyone who reads by and doesn't understand why mining asteroids/ the moon is a plainly superior option.