I would mark the dates on both sets, just in case you need to move them around for any reason. I know, you may not be planning to, but sometimes things happen and you do end up moving things around. If yo mark them now, it won't be a problem later. If you never need the markings, so what? It won't hurt anything to have them there.
That said, odds are the 1st ones won't develop, but if they do, here's what I would do:
I'd have a broody box ready, with temp set at 100F to double as a hatcher. Leave the eggs in place, until they're due to pip. Move them to the brooder/hatcher. If the humidity is about 55%-60% in the box, they should be fine. I'd put them upright in an foam carton bottom to hatch.
But if you candle at day 10, you'll know whether any are developing. If they aren't, pull them out, and you won't have a dilemma anymore.