Best advice it take the parts you need with you and ride it back. I've ridden a bike wheeling a newly acquired one alongside (with 2 flats) and it wasn't that easy. I've also ridden 5 miles with a 531 F+F over my shoulder, the GP will be quite heavy and you'll need lots of padding (and rest stops) if you carry it. Nice bike, but not worth breaking your neck over.
Best advice it take the parts you need with you and ride it back. I've ridden a bike wheeling a newly acquired one alongside (with 2 flats) and it wasn't that easy. I've also ridden 5 miles with a 531 F+F over my shoulder, the GP will be quite heavy and you'll need lots of padding (and rest stops) if you carry it. Nice bike, but not worth breaking your neck over.