I'll keep this in mind. The one thing that makes me hesitate about a big ship list is the low number of attack dice. I know the big boys are tougher and can last longer, but I like rolling 10 attack dice per turn if I can, especially against those delicate ties.
The problem with large ships is that they function best in tournament games due to the time limit. In 45 minutes you can be reasonably sure of killing a TIE or two, and surviving yourself. That's enough to net you a win. In friendlies, where the games continues so long as someone has ships on the table, it's a different story.
When you play, as a bit of an experiment, compare your final result to what the result would have been if you stopped play at the 45 min/1hr mark.