I have what's turned into a fairly massive spreadsheet project (file size
approaching (7 MG), getting a bit overloaded with heavily programmed forms
and intricate functionalities. Recently have been running into messages "not
enough system resources to display" when I'm trying to debug. I have been
routinely exporting the forms and modules and reimporting them after making
any substantial changes, so the vba compiler can clean itself up.

So, to finally get to my questions! Is it excessive of me to have 20
different variables declared as Public? And is it more or less efficient to
declare them as Public than within each procedure as they're needed?

Any other suggestions on smartly conserving system resources? Does it help
to reduce the length of individual procedures? i.e. break them into smaller
tasks? Does it help to spread them out accross more modules?

Any advice you have will be most appreciated!