If you already know they sound fabulous, i don’t see a point to send to SoundLabs.
Shipping would be best in original crates.
as for room placement, the speakers are about 3.5 feet wide, and you want to be 4+ feet from back wall, so you are going to partially block your view and yes they will dominate the room, it is worth it. I have no issues walking around my speakers to access the book cases.
To minimize blocking the view and allow easier access to at least 1 bookcase, you could rotate the room, have the back of the couch facing the outside doors and speakers on the 14.5′ wall.