Wow - this thing continues to amaze me.
Re: Eastern Alliance Destroyer, I put
this schematic together a few years back - assuming that an average male human is about 6 ft tall, I would estimate the Destroyer to be about 270 - 300ft long and about 45-50ft high.
And IIRC, Larson said that the Galactica was always supposed to be "one nautical mile" long, which roughly equates to approximately 6,076 feet. I think the Destroyer could fit in the bay without up-scaling. It would be tight, especially with the landing gear down, but it should fit.