1967 Suburban build

[tblazin2k5]

Since my plan has changed to using the stock trailing arms, if I can find a set, and the stock control arms but adding some lowering blocks and spindles and airbags all around some questions and concerns have come up for me. I also plan on using a step notch in the rear and possibly recessed buckets in my lower control arms. I have considered welding the rear bag mounts to the back of the axle if this will gain me a lot of drop. My goals have changed now, I don't expect to lay frame but can anyone tell me how low I can actually get? I know there are going to be some variables and I have tried to provide as much info as possible. If there is a thread feel free to direct me to it.