I have never used a water wiggler but with the temps you mentioned you will not over heat your eggs. If you want to double check this you could do a search for water wiggler just to make sure but it seems like I remember the water wiggler is supposed to calculate the temps inside the egg. Good...
What kind of bator are you working with? Does it have forced air are not? Those temps are not to high. If you do not have forced air I beleive its 102 you want to set the temps to.