I've always used 300C, but I'm told with smaller soldering points higher temperatures can be better, IF you're sure your hands don't shake...
How much lube should I get for 183 keys? (3x60%)
And is there an easier way to open switches than with the opening tools from mechanicalkeyboards.com? I always end up almost bending them when trying to open a switch from both sides at the same time, and if I open them one side at the time I end up closing the first side when opening the second - again and again...