Lowering a 3/4 ton Suburban

[Nodnarb76]

Well, I may finally be getting my Stimulus check next week. I have been on the fence as to what to spend it on, and one option was to lower my Suburban.
It is a 3/4 ton R20. I have found plenty of parts to lower the front using 3/4 ton spindles, and springs. The rear is where I run in to a wall.
If I do an axle flip, I understand I will need to "C" notch my frame. Who sells a "C" notch and flip kit for a suburban? If I do an axle flip with a 14 bolt full float axle, would I need to cut into my rear floor and loose my 3rd row seat?

If I do an axle flip any suggestions on how much to lower the front to make it sit level?

This is about the stance I am looking for.