Which bag and spindles

[38chevyhotrod]

I have lowered my suburban with springs, which was a big mistake in my opinion.
The ride quality was in the beginning not to good and now even worse with compressed springs. On even little bumps the suspension hits the already cut bump stops.

So i want to change the setup, and this is what i want to do.

I want to swap the spindles for dropped ones but how much drop is preferred.
And i want to put airbags on instead of the coil springs, in the front and in the rear.

Because i don't want to waist money on the wrong products i ask for your opinion.

I found this site, has anyone ordered there?
How is the company. http://thesuspensionsource.mybigcomm...les/Chevy/C10/

They sell 3 inch dropped spindles for a reasonal price.
they also have bags, http://thesuspensionsource.mybigcommerce.com/air-bags/
I think i need the 2600 bags.

Because i am from The Netherlands it isn't that easy to get parts.
All the brackets i can make myself.

This is my burb at the moment