Brake pushrod length.... and other brake woes

HI All,
Once again I am back to prove that I have just enough knowledge to be dangerous. 1974 dodge dart swinger. Brake pedal goes down a good 3 inches before it becomes "pretty good" which I know is definitely not good!

I have..... MANUAL BRAKES NO BOOSTER
1) REUSED the pushrod from old Drum/Drum MC for new Disc/Drum MC
2) Replaced New M/C from Rock Auto...Bench bled, probably poorly.....took a few attempts to get leaking lines corrected....may have sucked in Air at MC line hook ups
3) Replaced with new rubber hoses, and hard lines end to end. I detect no leaks ( finally)
4) Replaced new calipers, rotors, pads hoses lines in front.
5) Replaced everything new in the back......
6) New Prop Valve for disc/Drum set up
7) Taken OE Disc Spindles from my parts car
7) Passed mechanic inspection ( should not have passed! )
8) Bled and Bled and Bled......
9) Less than 200 miles on all this, haven't broken in brakes really, not real safe to drive as is.

Symptoms.....

A) Pedal goes down at least 2-3 inches before it really does anything
B) If I stomp it hard, it honks like a goose. I am not kidding. Honk is DEF at the MC
C) Upon removal of rear drums ( 10 inch) I notice the wear pattern indicates the shoe is contacting mainly in the center, less at the ends of the shoes
D) Pretty damn sure, I needed to adjust rear brakes outward. I thought I had drag....my rear end/Drive shaft/904 Transmission, seems pretty stiff to rotate in Neutral... how do I measure that?


QUESTIONS

1) Do I have the wrong pushrod?
2) Is it reasonable to "bench bleed" the MC on the car, with the pedal and lines routed into the pots?
3) My M/C Honks like a goose when I stomp on brakes. Is this Air in the M/C or JUNK M/C?
4) Should I simply take up gardening instead?

5)I have adjusted rear brake shoes to definitely drag, pedal seems better, but not good. must be fronts, or master?
6) The spanner bar that separates the rear shoes is the SAME on both sides..... it is merely reversed and upside down when you compare right and left. Everything else is new on the rear brakes except that part. Is that correct, or is there truly a right/left. I have checked the FSM but the picture I had was too grainy to 100% confirm. Everything else seems to be correct to the FSM pics.