Newb To Macros: Questions on common Size Buffs

Hello!  My party and I are fairly new to Roll20 (Pathfinder) We are trying to design or otherwise find a way to create a buff like for Enlarge/Reduce Person, where not only are stats like STR and DEX changed, but also weapon profiles and size. We have figured out how to get the STR and DEX to change, and other simpler modifiers to work, but want to know if there is a way to create a Macro or something similar with a clickable debuff that also changes the character's size (using @{size} maybe?), and weapon damage profiles. We can create multiple weapon profiles, but that seems rather tedious and would like to know of any strategies or tools that are easy to understand and implement at the basic beginner level.

If this comes up a lot, it would probably be best to just create another attack.  Either that or just change the damage dice of the weapon being used as needed. Since the damage upgrade can be different depending on the original size (1d8 small becomes 1d10 medium, but 1d8 medium becomes 2d6 large), I doubt this will ever be automated.