How did you know about the 5x limit on switching to another map? Did someone actually *
gasp* read the documentation!?
(kidding of course -- I'm sure many have referred to the documentation)
But yes, I think you did misread that 5x limit. That limit just means you can't go more than 5 deep into other maps. So, for example, if your inventory screen allowed you to jump to another setting screen, and you wanted to be able to return to the inventory screen from the setting screen. And your setting screen similarly took you 3 more levels deep to other maps, then you might run into a problem. But if you always return properly to the old map from the inventory screen, then you shouldn't have any problem. You will only ever get 1 level deep... unless you have maps in the main game that jump to each other with the "remember old map" option set. You just have to make sure that you don't have more than 5 maps remembered at any one time. Make sure that when you return to a map that was remembered, you use the "Return to old Map" option. I don't think you'll have a problem.
Another possibility is to use the buttons like this (if the keyboard lets you use this many keys at once):
Button1 + Up + Left = switch to previous weapon
Button1 + Up + Right = switch to next weapon
Button1 + Left (and nothing else) = switch to previous magic
Button1 + Right (and nothing else) = switch to next magic
Button1 + Down + Left = switch to previous item
Button1 + Down + Right = switch to next item
Then you still have 3 unused buttons.
