Actually, not sure if I should update at all. Aircraft are now coming in to MSFS very fast.
I was waiting for PMDGs DC-6 to be updated to V5 but it looks like as if it comes to MSFS faster. I still fly FSLABs A320 a lot in P3D as well as Leonardos MadDog, but I don't need to update for it.
Also, the update process is tricky as I have a lot of custom tweaks in V5. I could just update the Client, though, as this is pretty straight forward and updates the weather engine.
Updating the Scenery would make a reinstallation of Tongass necessary, also the scenery.cfg will be reset. Updating the Content will leave you with defaults for, as an example, effects and textures that have been changed by 3rd party software. Means reinstalling those addons.
Karl