The first Request is fairly easy to do yourself, it's a copy and paste job.
Do an SAS wide Search of how to set up Plane_ru.properties
If you lack further info, open Wikipedia, that shows you when a kite entered service if
in any serious doubts.
It's no rant to keep you from your Mission finding each Mod without these entries.
Before you ask, there are bunch of Mods without plane.ru or weapon.ru.
If no Weapon.ru Entry is given, you can help yourself by finding the main Classfile
opening it with notepad, the classfile contains the 2nd part of the first line needed.
First part is always the 1st entry of the air.ini.
example from F-6F-5 with expanded Loadout:
2x1000lbs BombGun1000lbs
#####################################################################
# F6F-5OL
#####################################################################
F6F-5OL.default Better than nuthin'...
F6F-5OL.2x1000lbs 2 x Hair conditioner
F6F-5OL.none Crap
If you proceed in your task giving all your custom Mods missing these the affordable lines,
you'll notice that some entries you can't retrieve or others are missing.
Both is not your fault but comes from the Classfile.
Learn and lean yourself a bit deeper into the subject.
Hoped to be of lil Help
Tobias