I'm in a similar boat, looking at a set with the original 25-100-500 colors but am looking for something a little different for the 1K. I like the retro blue/yellow combo you have there. I was thinking of going with the 6A14 spot with either of these combos:
Still trying to figure out if I think these flow with the rest of the set or if the spot should be 614 like the 500.