Its not that hard once you learn how to control humidity. Hint: The exhaust of the miners...
Another way to ignore the humidity problem entirely is going with immersion, but that's a whole bag of expertise.
Ambient temp is overrated, i have seen it working with ambient 40°C, so 30°C ish or so is just fine. Its just a matter of moving air, and preferably filter it to reduce maintenance (or just do periodic scheduled cleaning maintenance, if your labor is cheap).