Command ?

No idea where bepinex is downloadable itself, so my suggestion is

Download Valheim+
Download Recource Removal
Copy the Valheim+ Content into the game folder so that bepInEx is here
?:\SteamLibrary\steamapps\common\Valheim\BepInEx
Copy the DLL of the other mod in this folder
?:\SteamLibrary\steamapps\common\Valheim\BepInEx\plugins
Start game (so that the mods write their Config files)
End game
Edit the config files with Notepad++
?:\SteamLibrary\steamapps\common\Valheim\BepInEx\config

Valheim+ changes so far i know nothing as long as you dont activate this stuff in the config file

And then play the game.
I mean if you dont edit the Config its "Numpad 0" to remove all stuff in a 50m range.
So better test it on a new map you make for test purposes