best way to get a 64 as low as possible on the easy.

[j.rigby15r]

So I'm getting ready to do some serious work on my 64 long fleet. I am going to start off by switching to power disc, at least fronts haven't decided if I will keep drums on the back. While doing so I wavy to get her as low to the ground as possible while maintaining drivability. I'm planning on 2.5 drop spindles and 2"drop springs in the front and c notch the back with 5" and possible blocks. From what I've seen I don't think that will get my c10 as low as I want. I've started reading about a z frame. What is a Z frame? What is the difference between a c notch and a z? I've also seen guys swap the front cross member why? What is the easiest way to get low? I know everyone has their opinion and I want to hear them and why they chose what that did and how much it ran them. Pic would be helpful to, I'm new to this stuff so please keep it simple. Thank you.