Great!
Hmmm... I don't really know whether I'd keep the stock caps on or put the extra set on as soon as it arrives. On the one hand, the stock caps have the Fn layer printed on them, but on the other you can feel the legends on the top of the stock keys. If you replace the caps, the originals won't get worn and you can keep the resale value of the board up, but on the other hand, PBT wears so slowly that I don't think it really matters... So, I really don't know what I would do.
They are both really nice keycaps. Congratulations, you have an excellent keyboard and 2 sets of fantastic keycaps to choose from.
P.S. - Actually I have decided what I would do. I'd use the stock caps for a bit, then
design my own Fn layer, program it in and swap to the side printed caps