Cerious technologies or audio envy

Hello, need some advice for a system I am building in my 14x19x9 ft bedroom.  I have the persona 3fs(right left and center), and coda 8 amp V2 - 250 watts, since I like my music loud and movies 70%movies/30%music.  I have the Marantz 7705 MKII right now for my receiver. What cables and interconnects do you recommend: audio envy sv9s or Cerious technologies Graphene matrix? I have a new svs sb4000 subwoofer, too.  Thanks in advance for the advice.