On my 2nd monitor, I open Firefox and open a tab for all my airplane manuals/notes and a tab with Navigraph/Skyvector/Simbrief (depending on how I’m flying that day). I usually open Notepad too and leave it in the background. I update any outstanding addons if I remember to and check for Navigraph updates.
On my primary monitor, I start TrackIR and Addons Linker. I select the addons I want for that session and click Start Sim. If I choose to, I might start FSLTL while the sim loads.
i9 13900K
MSI Z790 Tomahawk WIFI
32GB DDR5 @7200
RTX 4090 Gaming OC - Gigabyte
Windows 10 pro
Navigraph Charts, the mapping app, is still useful to me when doing IFR flights outside the US because ForeFlight would charge me even more money for those charts. 
[Note that having the Navigraph navigation data is useful within the US or other core region you have selected as well, as the nav data for IFR especially seems way better than the stock MSFS data still.]
Second this. And they’re Jeppesen charts (whereas the basic ForeFlight subscriptions use NOS), so having both means the best of both worlds.
ForeFlight will give you a lot more in terms of real-world advisories as well. Navigraph is more integrated with the sim (including SimBrief).
There definitely is room for both, but I’d advise Navigraph first, and only ForeFlight if you have the money to spend on something very realistic and/or are looking to get better at using that for real-world flying.
Short procedure:
Long procedure:
I have and use many of the extra tools that others mention above, and a RAM disk for the rolling cache. Everything apart from the sim is auto started at boot or from exe.xml. I really hate fiddling around with stuff that the computer could just do itself.
I use add-on linker not just for community but also for all of the official and marketplace content. That way with a couple of clicks I can start a vanilla sim install with or without world updates, which makes troubleshooting so much easier.
Here’s a tool probably not many have. I run Syncthing on the PC and also on my phone. It’s set up to sync the captures folder in real time, so as soon as I take a screenshot it arrives on my phone and then I can upload it in a forum post or whatever.
It syncs both ways so I can copy downloads on my phone directly to the PC as well. Syncthing is free open source software.