[Suicide Junkie]

Ok, lets see...

First, you added some new pictures, and a vehicle size to match.
The Eee image didn't work for you... my first thought there is you may have not changed the racename at the beginning of the filename to read "EEE_" instead of "Terran_"

1) As for the AI using the ship hulls you created, if the tonnage is within the range of the existing ships, they'll use one of the existing design patterns.
Otherwise, you'll need to go into the AI_designCreation.txt and copy a blueprint to use for your really big ship hulls.

2) The AI research plan is found in AI_research.txt, just add an entry for new tech area name in the right order for when you want them to research it relative to the other existing techs.

3) What the AI will actually use depends on what its design blueprints call for, and what facilities it is told to build in the text files.