The only other thing is that some of those numbers are modified if you're using more than one expansion board. The official FAQ explains it:
"The rules are unchanged when using more than one expansion city, except that the number of players should be counted as being one less for each expansion board in play beyond the first. So, if six players are playing a game using both Dunwich and Innsmouth (for a total of two expansion cities), they are counted as having one less player, for a total of five players. This modified number of players is used only for determining the monster limit, the maximum number of monsters that may be in the Outskirts, the maximum number of gates that can be open at once, and the number of monsters that are drawn and placed when a gate opens. It reduces the level of difficulty for the players since they have so much more ground to cover. However, it does not apply to various card effects (such as Rumor mythos cards), to the number of successes needed to remove a doom token in the Final Battle, nor to the number of gate trophies the investigators must have for a victory by closing all the gates on the board."
Of course if you're just using the base game or one expansion town, you don't have to worry about all that.