[SCOTI]

As stated, for quick fills, you'll want reserve air on hand which means a storage tank.

So the question would come down to do you invest in a set-up that's permanent or use a portable air tank when visiting locations that you know you'll need to raise the truck. I can say that after filling the rear bags on my old Beater'68 & '74 (helpers) 'when needed' it wasn't an issue but the rear suspension doesn't impact alignment like the front.

For the fronts, I would say I would want regulated/on-tap air source always @ the ready since they're tied into your alignment (meaning tire wear).