I have been building landers already, and pre testing them on Kerbin. Im totally guessing, but the planet will probably mirror mars slightly, so a thinner atmosphere and lower gravity, so my designs may be overkill. Basically i have a rocket thats strong enough to make orbit from Kerbin, which i GUESS could be enough to lift off from a small planet and back to Kerbin. Then, i have multiple parachutes to get it slowed down before using power to softly land it. Testing this on Kerbin is funny though, due to the weight of all that fuel, 8 parachutes is only just enough to slow it down while 2/3\'s power is working to stop it blowing up on touchdown. Getting 'home' is another matter totally though. Cant wait for it, PRE testing is whats keeping me going at the moment