Wow, that is a lot of ships!
In all honesty, getting the AI to build all of those in is likely to be a nightmare - at the very least it's going to take time and effort to do.
Firstly, do you have a plan about how you'd like your AI fleet to unfold? I.e. have you made sure that you have a logical hierarchy tree so that the order of units off the line matches what is required in the tech tree. It's no good having the AI build fighters if the required base isn't there yet.
As for implementing it, I always start with modifying one existing AI file. I look at the ships I want to build, look at what is already in the AI file, and either replace the existing ship or replicate the line, changing only the ship name. I then copy the content of that file into the other AI files for that race so that it can only use my modified text and run a mission where I've deliberately set the fleets as far apart as possible, warp drive to off and the fog of war to off.
Here's the important bit - I then watch the AI fleet unfold. I don't play the game, I watch to see if the fleet builds units in the expected order. If it doesn't - it's usually because there's a dependency that hasn't been built yet. SO I go back to the AI file, modify it so that the dependency is there, copy it into the other AI files, and start the mission again and watch it build again.
And I do this over and over until all my ships are in and this sole AI file works correctly.
Then I start making variations in the other files, some will be fighter heavy, some will skip certain types of ships and so on and so forth. So long as the dependencies are there it should work ok.
As for game crashes - I can't say I've ever had a game crash because of an error in the AI file. Usually it just stops building or skips the unit. What I have had happen on many occasions is a crash where the AI has tried to build a ship that has an error in the odf. So again, it's a good idea to watch the AI build and see what exactly causes the crash - then check that ship odf for typos etc.
Unfortunately there is no quick and easy win in balancing an AI - it took us months on the BSG mod.