you can use SFS Files mounted in any modded game version
planes RU file is to just get a different name in the FMB/QMB Plane list
rather than the name in the air.ini
usually a btter more cleaned up name with usually the year involved of the aircraft
(purely a cosmetic file and not needed other than to make your plane list look better)
Weapons you will need,so of coarse you need to edit that file,and have the weapons installed you edit into that file
(you want bombs/rockets then yes)
Basically use the SFS File for planes,download all planes individually from there to get any missing componants
It's not a big deal,it is just like installing any aircraft into any modded version of the game