The I-17R does have the jib kit! I actually own the kit and use it from time to time in light wind distance racing 1up with the spinnaker. The I17R with the jib kit, 2 up would workout well especially when the wind is up. The lowest price on a used I17R that I have seen so far was about $7500 to $8000.

Tom Turlington
I17R #124