If I recall correctly, the denuo novo FOTK will come with a connection at the shoulder of the yoke. There is no seam allowed here, so it would need to be modified to be approved. As with Glen though, I have not seen a ready to wear kit. There could also be other areas that would need to be fixed.
my advice on which kit to go with is pick the one that means more to you. You may accumulate more kits down the road but your first will always be the most special.
being a member of both spec ops and FISD, both detachment are full of great people who will be very helpful along your journey.