need help spending money

or on what speakers, actually. looking for suggestions on rear monitors and sub(or 2) to go with totem signature model 1 front and center monitor with denon 3805, denon 3910. room is about 25x20x14, mostly hard wood floors, used for music and movies, about 60:40. looking for a faast, accurate sub, don,t necessarially need the boom. I have about 2000 to spend and definitely would consider used equipt.
thanks for any suggestions