Your welcome! Glad to be of help.
Regarding the Technology level, it is your typical Space Opera advancement. Think Star Wars, Dune, Warhammer 40k, Ender's Game Books Past the first one. You have planet busting capabilities, but chances are, you won't use these unless you are willing to have worse done against you. Regarding how you wish to create fleets of ships, it doesn't matter if you wish to use a large amount of smaller ships, a small amount of extremely large ships, or a mix of both, but please, realize that you do not have the ability to destroy the galaxy, nor even a solar system.