I'd go through the PDF on this
post for specific items you may or may not want added, and see if the package makes sense. It's supposed to be for April, when you're placing your order. There may or may not be subtle changes.
I can tell you that there's also a USB connector in the glove box, but that may be part of the upgraded sound system. Also, while I've been told (by everyone that is supposed to have a good understanding of what does and doesn't work) that it wouldn't, my HTC Incredible Android cell phone paired with the bluetooth system and works like a charm.
Your fine-tuning may or may not give you the exact results you want. The power tailgate looks to be a separate item you can have by itself, though.