Advice on whether to stagger a hatch?

So I ordered eggs from two places, one from a hatchery here in Iowa and one was on Ebay. I received the largest and cheapest egg order last Friday on the 18th (26 buff orpington eggs) and Saturday was day 1 for them.

My ebay eggs are 4 cochins and a mystery egg, and they came in yesterday, the 21st.

What should I do different with them? Is it even worth bothering with? I only have one incubator and I know during the last 3 days not only does the humidity have to go up for the buffs, but I will still have to be turning the cochin eggs.

I may not even have a dilemma as they felt really cold and may be no good at all. I went ahead and set them today just in case because I didn't want to just pitch them.

I appreciate your advice!