Why not go full hypermodern? Play the Reti as white, the Alekhine against 1.e4 and the Grunfeld against all other white moves.
Birds opening is pretty solid, but at your level (2100)plus u wont get any opening
advantage out of it though/ and against lower rated players u wont run into
much prep/ like in the sicilian for example/ you shoul.d learn a good line against
the Froms gambit though
later duder
goommba88