I got my LCR018 in early December, but only had it built up last week. The bike is pretty sweet.
Thank you to whomever recommended a better set of headset bearings from Amazon - I bought those and installed those instead. They were noticeably better than the ones Light Carbon put into the kit, but it was nice to have the LC ones just to make sure I ended up buying the correct size.
I went with Shimano 12 speed, cable-actuated 105.
I'm 5'10", 56 fits me nicely. I have a 90 stem, 38mm wide bars.