Duck Hatching

[Dee 3]

can any one help me I'm hatching mixed ducks in a incubator muscovy and mallerd will they hatch out at the same time they have been in incubator for 7 days now at 99.5 and 60 % and I also have about 5 guinea they all have a peep in them I know the Muscovy take 38 days but being they are mixed will they take less days to hatch and do I have the temp and humidity set right and do I mist them once a day
I'm new with hatching ducks and guinea chickens hatching I'm good at