What About Building a marsbase in the caynon (i dont know the exact name) in it there would be place where you are protected from two or thres sides or if there is a suitable cave that would solve the Radiation issue youve quoted.I hate to be the spoil sport in this jambalaya of hopes and dreams, but the reality is long term space flight, even to a location as close as Mars is essentially a death sentence to astronauts. The primary reason is neutron irradiation. Astronauts traveling as far as the moon maintain a minimal protection of the earths radiation belt, but even in those rather limited missions, we see the long term effect of additional exposure to neutron irradiation which essentially tears not only at the cellular structure, but also at the DNA structure of astronauts on missions that are 1/2 or 1/3 the duration of a mission to Mars, with 10 to 20 times more exposure to neutron irradiation. To defeat that impact would require a structure so large around the "capsule" that would make it impossible. Beyond that is the simple impact of long term exposure of weightlessness on humans.