When studding the IQ Touring, keep in mind that there are NO bogie wheels that run over the center band of the track, only the rear idler wheel runs on the center band. This means there is less support than usual, especially out in the very middle of the band.
I would suggest that you keep the studs fairly close to the rail, but make sure the backer plate is at least 1/4" away from the window opening in the track.
I also wish you good luck in finding a place to carry your spare 3211099 belt. The 700 Touring mounts the belt clip on the cleanout door that allows access to the front of the radiator down in the bellypan. You definitely should carry a spare belt, it is a shorter belt than the other Polaris sleds use, it is only used by FS/FST powered sleds.