You had me sweatin' near the end there. From my experience, the most valuable resource in the game was actually real estate, as I feel like you can very easily bone yourself if you don't think ahead about where you want to put your stations.
I do feel like the game could have benefited from having some error messages that pop up to let the player know why that can't build certain structures in certain places. I had to rely on trial and error in order to figure out where water pumps and mineral/ore excavators were able to be placed.
Otherwise though, I really enjoyed the relaxed nature of this one, and even though there was a time limit, it allowed me to think and plan as much as I wanted to before time progressed. The UI for the resources was also very succinct and easy to understand, which made keeping track of my growing base a breeze. Awesome job with this one!