Is 60 atm a bit too high, Jool has like 15-20, and looks like you really are planning for a CRAFT load of bodies, that Terriblis only got 4,35 g Gravity and 1,2 atm pressure, and fairly flat near sea level, located between Eve and Kerbin, Crag has like 5 g Gravity and like 60 atm that appears to make that one before it looks easy, and i was having a hard time to send my no docking Eve lander to surface because of a max 5 atm atmo, looks like it is made only for some literal madlads like Matt and Hazard-ish and such.