Ardo1

I just lugged my new KLF30s into my house. Awaiting for the arrival of my new RS3s. Received my KLF C7 last week. Receiver is a Nakamichi AV8 and Sub currently is a KEF 20B until I complete my Sub research. I have RF3s and KG 3.5s that may go to bedroom duty unless someone has a better idea. I run wire under my house to my rear speakers. Can I splice the wire and hook up both the RS3s and RF3 as my rear surround. Does that make sense? will it cause a short? Any ideas? thanks.