It is pretty easy to lift, I am not a strong guy (bench press < 100lb) and I don't have any trouble putting it up or down. The lifting action is assisted by gas springs which you can kind of see in the video but I didn't really mention them.
There is plenty of room for running cables off the back of the desk, I currently have a half dozen cords for charging phone, laptop, etc... and I haven't had any problems.
Looks really cool. If these were done and you were offering them for $650 I'd buy one, but donating to a kickstarter and maybe getting one next May doesn't sound like fun...
You can take down my email (in my profile) and feel free to hit me up in the future if and when they actually get built and are ready to ship.
There is plenty of room for running cables off the back of the desk, I currently have a half dozen cords for charging phone, laptop, etc... and I haven't had any problems.