Archimedes4

I got my first eve encounter, eve periapsis is around 67 million meters, but when I try to warp it says “cannot auto-warp so far” then when I try to manually warp, the intercept disappears. Any way to help this? I kinda want to land on eve.

I have the money for one of the expansions, but I have no clue which one I should get. I’m leaning towards Breaking Ground for the robot parts and science stuff, but I’m not sure. Any advice?