To be fair, your comments about lights are also without any foundation given, and I made no comment about lights other than the Shimano, which for me isn't as bright as the aforementioned USB lighting, plus the lights don't flash, as all the usb I've seen do, though I understand this is banned in Germany.
Getting the six speed from the start does add flexibility, and probably works out cheaper than adding the hub later. Certainly for the hills here and around Paris they are a big bonus, even for the daily commute. Which reminds me, check seat posts size, since I found adding the optional longer one made a huge difference to my cycling position and therefore efficiency.
If you do get the rack, also go for the bigger wheels on it, since it makes wheeling the folded Brompton much easier.