How many AC Units do I need to have in a hatching station to safely hatch ANY breed of egg?

[TidusGaming]

I plan on building my hatching station over the water, suspended in air by Metal Pillars, in the Hidden Lake area in the North-East of the map. I was planning on using 8 in a U shape, or 9 in a full Square. Would this amount suffice for any Fertilized Egg, be in a Giga or Quetzal or a Dodo or Dilo? The building will be layed out as a 7 by 7 ceiling structure, with the AC Units layed out in the middle of singular ceilings and spaced out 1, probable 1 and a half, ceilings apart from each other in a 5 by 5 fashion. If more detail is needed, do let me know, as I'm trying to get this right the first time I do it!