Interesting idea, make the machine start the craft to put the egg into stasis, then disable the power to stop the crafting progress. This sounds like it could prevent spoilage an indefinite amount of time. But experimentation is required to know for sure.
I can’t play for a while to test this out, perhaps @jet@hackertalks.com has the opportunity to test this out.
I think you can horizontally flip the engines to let the fluid pass through, allowing you to place them next to each other.
Not sure though, my platform had only 1 engine. It didn’t last very long though, yours is definitely better!