Wanting to go from static to bags (how does this setup sound?)

[C10_ForDad]

Hey guys! On my 70 C10 I have 3 inch drop springs in the front with 2.5 drop spindles, the rear is 5 inch drop springs. Ive recently come around to the thought of bagging it. I dont need to lay frame but Id like to be low. I was hoping you guys could evaluate and give me some insight on my tenative setup. Im wanting

CPP C notch
Michigan Metal Works C10 Upper and Lower Arms (narrows and move the wheels forward)
Slam Specialties SS7's in the front and SS8's in the rear
Keep my 2.5 drop spindles
Add blocks in the rear if needed
An Aire Jax Four Play
X2 Industries Air Pressure Gauge (reads the tank and all 4 bags on one gauge)
A 5 gallon tank mounted somewhere.

My questions are,

I have a big air compressor at home, could I use that to fill my tank so I dont have to run compressors? Or do the 5 gallon tanks not keep enough air for that? And Ive read using a bigger bag in the rear makes it ride smoother, is that true? And hardline or soft line for the air lines? Im very familar with making hardlines for this kinda stuff, I just dont have all the tools at home for it. And last, how would I plumb it up for FBSS, i cant seem to find a good diagram, or at least one that makes sense to me.

Thanks you guys!