Yes, the rule is intellect > mastery. However, for sockets, you get 2 mastery for 1 int, and 2 mastery are stronger than 1 int.
Stat weights are fine by default in Mr. Robot, but you need to put in your caps. Choose the 3043 haste cap (should be default) and enter the level of spirit you want to have (try something like 12k for starters, although you might need less for normal modes and with DSD).