You can create an elevated shortcut to run bbw4 bypassing the UCA but you will have to run Standalone manually then the shortcut and in the Preferences set it Keep BBW Open, this should keep bbw4.exe always open when using the vst plugin hopefully.
Drag bbw4 into UCA Pass it will create a shortcut on the Desktop that you run after starting the Standalone and before using the vst Plugin.
https://www.softpedia.com/get/System/System-Miscellaneous/UAC-Pass.shtml

It you create a windows installer for bbw4.exe it should bypass UCA
when bbw4 is started https://www.softpedia.com/get/Authoring-tools/Setup-creators/Inno-Setup.shtml

See if any of those work.