Coding Questions and other Quandaries

[Hackwiz]

I'm using 5.0-11380. Is there a better one you'd recommend?

I have a question regarding Gecko registers and pointer use.
Referencing the Pokemon code above, I want add another button activator to cycle through the different items.
Is it necessary to add it to that code, with

E0000000 00000000 or E0000000 80008000

in between, or can/should it be it's own separate code?

Also, let's say I set the pointer with the above code, will other new separate codes I add, have the ability to reference the pointer set up in the first code, using pointer referencing Gecko code types?

Thanks!!!!!!!!