Fascinating. Didn't know about this.
Currently I make a macro in km and have it signed to a keyboard trigger. Eg Ctrl+1
Then I go into stream deck and make a trigger that types Ctrl+1
Will this plug-in link km and stream deck so there is no manual making of keyboard trigger?
The KM Link add-on will let you specify the name of the macro so that you don't need to use hotkeys at all. Is that what you want? Or do you want to use hotkeys? What is your goal? Are you trying to determine which add-on is best for you? Or do you already know which one you want to use, and just want to learn how to use it?
Yup! Give it a go. 
Use modifier keys in KM. Use the Option key with F1-8 for F13-20.