Yeah, much easier to cool in space.
~1300 W/m^2 is easily achievable for an aluminum radiator pointed away from the Sun, as it is mostly just seeing cosmic background radiation at ~3 degrees above absolute zero!
Solar panels generate ~250 W/m^2, so you should expect them to have ~5 times the area of the radiator. Most of the mass of the satellite is solar panels.
The trick to being a charismatic adult is to act like a 5-year-old.
Always say hello/goodbye to people you know, and just act like everyone is already your friend.
the older you get, the more you realize luck is mostly exposure, if you sit in the same place, have the same routine, talk to the same person, nothing new really happens, you have to engage the world to win, travel more. talk to people.