4/6" drop on a 71 C10 SWB need a C-notch?

[SketchsInk]

Hey everyone. new to the forum so any help wold be greatly appreciated.

I'm in the process of purchasing an all original 71 C10 SWB. No pictures uploaded yet but will upload soon.

I want to go as low as possible without cutting the frame. eventually I may want to do a full restoration and don't want to devalue the vehicle by cutting a perfect condition frame.

The truck will stay patina for a long time and will be running the stock wheel and tire set up. (using it as a shop truck)

My question is..

Are you able to drop the truck 4/6 without bottoming out?
was thinking of running 4/6 drop springs for now. thoughts?

What does everyone recommend, and pics would be a great help!

Thanks in advance.