[villagetinker]

We built, a Gardenia model and were able to get 3 of 4 requested stretches, and all of the interior items we wanted. We added the birdcage later, after we figured out what we wanted. As pointed out above, anything you add to the house when being built will add to your mortgage and taxes. For example, the builder wanted $2000 for under counter lights, we declined, and I installed my own LED lights for under $300 for both under counter and over cabinet lights. We had the house prewired for a security system, doors, windows, and cable for cameras, this actually saves a lot of money over installing the wiring at a later date. As previously stated, you may want to wait on some of the items until after you move in and see what others have done. Coating the garage floor is a good idea prior to moving in as it is empty, be sure to have 'shark grip' or equal used so you have a non slip finish. We had ceiling speakers (Bose) installed with the house to avoid seeing any wires, but with all of the advances in sound bars and wireless speakers, we get better results with a new sound bar system.
Hope this helps. Send a PM if you want to get more info.