You can extract an additional battery from the mars robot. You need a mechanic to do that. The additional battery will increase the range of your rover/drone. You have to build a pump, several greenhouses and an o2 generator. Most stuff you have to build when the wreck already crashed. You have to recover a water filter and the o2 generator in the beginning. That will reduce the amount of o2/water you have to recover until the crash. And always speed up tasks by assigning multiple crew member.