Biwire jumpers as speaker cables?

yes, that should work. Frankly, i am amazed you can get the jumper to reach...the terminals must be...what?...within 5 inches of each other? Super-close!

(BTW, I happen to have a pair of Transparent Audio Reference jumpers which I used with my SF Guarneris (since have sold the G's on)...but kept the Jumpers. If interested, feel free to email.)

i suppose you could always place them vertically with the top of the amp facing the listening position. Assuming the speaker terminals are towards the floor, then the amp would be about 8 inches off the ground...allowing the PC and IC to come straight down and to the pre...and still managing to keep the unsightly wires from sticking out and facing the listener. Unconventional but could work. Will need an amp stand.