Has anyone driven both a 2.5/4 and a 4/6 drop?

[Project1970]

I ask because I keep seeing more and more 4/6 drops done these days...I'm getting tempted to add to the list of things to do to my truck long-term (along with a 5-lug conversion and some 18s) by tossing on some 1" or 1.5" drop springs (probably 1" because I'd like to lessen the rake I have now) and 1.5" drop shackles for the rear

As it is, (2.5" spindles, 4" drop leaves) I really don't have any problems anywhere...thing is, I would probably have to C-notch the frame as well.

Would going down another 1-1.5" in the front and 1.5" in the rear (assuming I C-notch it, since 5.5" of drop is quite a bit) reduce the drivability much/at all?

Mmm...I need money...new rotors, new rear axles and drums, front springs, rear shackles, 18" rims, and 18" tires...nooooot cheap.