Mainly just need to worry about 1st year hens until they get the bugs/smaller eggs out of laying systems taking up to a month or so. As the smaller eggs can have more difficulties hatching. As long as your eggs are all normal sized and have not been having any other egg issues you should be ok.
I haven't experienced that incubator, but as most will recommend using a separate calibrated thermometer and hygrometer inside. As most incubator gauges can't be trusted even on expensive incubators. As long as it holds temp well and decent humidity you can still get very good hatches using...