More modding questions

[Saber Cherry]

I read through the modding FAQ, which was very helpful, and showed how to make which changes. But it did NOT explain the ramifications.

So what I really want to know is this:

I'm altering Devnull to be a little more Proportions-ish. If I add new components, like "Armored Structure", and I just stick the, somewhere in components.txt, will that mess up the AI? Will the AI just ignore them, make use of them, or accidentally design ships stupidly because a new component is available?

Secondly, I want to reduce the number of engines on Colony Ships, so they'll go slower. But if I change the maximum number of engines from 5 to 3, will that mess up the AI? For example, does the AI have pre-made ship designs with 5 engines that it will be suddenly unable to use?

Thanks!

-Cherry