cooling can be done with radiators pointed north, into the permanently black sky,with essentialy no convective heat gain or loss, build for noon in mid summer, and forget about it lots of things work on mars that dont work here, Thin film prevoskerite solar ,which is sensitive to water and oxygen and therefor difficult here, can be sprayed on whatever is handy on mars(oversimplification, but), and the same goes for a smelter that is electric, where one of the byproducts is oxygen driven off, hand that, and that high quality metal and castings will be possible as the lack of atmospheric oxygen and low pressure will de gass metals, also metals wont corode after bieng made. given the very low night time temperatures, it should be quite easy to liquify martian "air" and use it for day time cooling where needed and also the exraction of trace gasses other than CO², which is the bulk.

none of that maters without a good supply of water to crack for fuel and air and general living, and as there is a whole world to work with, it is likely that there are a few areas that will have a fortuitous convergence of ALL the things possible, in one spot, kind of like early settlers finding a stand of trees, felled by beavers, bark stripped and pre notched for assembly into a cabin, next to a pond with fish and medows all around

to put things in perspective

pure gold would be good for use as sheet metal, as it's ductility and ease of refinement would make it the cheapest alternative

it's doable, but only just, and only if we get our shit together and decide that an impossible, ultra long term project to become an interplanitary species is a better way to use our excess capacity than whatever the fuck it is we are doing now