Air baggin questions please help

[IHutch5R]

Alright, I'm thinking about bagging my 66' swb. I've always said I wouldn't but it kinda seems like that's the only way I'm going to get the stance I want.

My questions are; if i keep my factory trailing arms what all do I need to do besides a c notch, shock relocation, and adjustable Panhard bar? Do I need to add any crossmember support or change the trailing arm/ driveline crossmember?
I was also looking at the replacement trailing arm/ mild c notch kit. What direction would yall suggest? I'm new to this whole airbag thing so I have no clue. Thanks guys.
Picture of the trailing arm kit I was looking at.