What's wrong with 6-7 ft tonearm wires?

I've bought a 2nd turntable which can only be placed 7 ft from my Preamp with inbuilt phonostage.
Would the capacitance be too great in phono cables this long?
I don't want to buy a separate phono stage for the new turntable as it would be hard to compete with the inbuilt one in the Halcro DM10.