Does Polk Audio R30' match up with CSi3 center speaker ?

boston1450

R30 small towers with a CSi3 center. Is the timbre going to be off ? Im doing 3 channel on a Yamaha rv701 80wpc with a psw202 sub.... When pick up a 5/1 i can use R15's for rears.. JUST for movie listening. This Yamaha is only 15wpc to rears TIA