2 Questions: Pad Size? How to do A-D pillars?

[Calendyr]

Right now I use my Meguiar's DA fitted with a 3" pad for small areas like A Pillars. It's not as precise as a rotary and it's a bit bigger than I would like it to be but it works. I don't like the idea of having to change backplate and pad to do sections, to me it's a huge waste of time. I prefer having a dedicated machine setup for it. I have a GG3 but I think it lacks power so I stopped using it when I changed the BP on the Meg's DA. For large sections I use the Rupes 21.

[KMdef9]

The BP on the flex can be changed pretty quick.

I'd love to have a separate Rupes for 6"-5"-4"-3" pads, a 20 something gallon air comp with several rotary sizes, etc but it isn't in the budget.

On a side note, all I need would be the flex (6", 5", 4" pads), a Rupes 3" and rotary 2" and I'd be really happy.