2017 nissan armada SV looking to change struts,shocks airbags trying to avoid dealer and either do it myself or hire someone. I haven't been able to get info on part numbers everywhere I call says they dont have anything available. Anyone with any info on part numbers or place where I can call...

Went by Auto Zone, they have Monroe Struts and Rear shocks for total $560. Plan on installing them myself. Should I go Monroe? Rancho? Store brand? Or pay a shop to install Bilstein for me? Trying to keep this as budget as possible. Currently struts have no air in them(what the shop told)...