We've found that they tend to have more sensitive stomachs, so we are liberal with probiotics, especially with chicks. They can also get overheated easily with brooder lights (go figure!), so watch for pasty butt. They're REALLY tiny as chicks, so if they're with older breeds, make sure they are either raised together (we can put the Eng Orps & Dwarfs together right after hatch with no problem, but if they're not in there together from the beginning, the Dwarfs can be roughed up a bit).
As far as hatching, ours can pip on Day 18 and hatch on Day 19, so be ready! Maybe lockdown a day early. But don't use too high a humidity, 50-55% in a thermal incubator or 60% in one with a fan.