You would be better using RB ReWired to REAPER
http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=371691#Post371691

You need 2016 or later for vst sync
In RB right click a track and set to midi
Right click track > Specific VSTi...for MIDI track > add ezdrummer.dll, click fx button to show.