Luckily I managed to stay in and await delivery for it today, and it turned up!
In terms of assembly, all I would have needed to pick it up using itself, would be a small spanner (adjustable would be fine) and allen key, to bolt the lollipop to the metal arm, and some way to remove the bike wheel to fit the clamp (on a bike with a QR wheel, no tools required). At a pinch, gravity and friction on the lollipop would probably have held the bolt in.
The box would have fitted into the Yak Bob if I'd needed to do that, but only just, and would have been so upright that bungees would have been needed to keep it in that position.
It comes with a couple of small reflectors fitted to the underside of the carrying surface, but I may well remove those before they come loose of their own accord and start rattling. I've got a couple of rack light fittings which I reckon I can screw into the back of the board with a small pilot hole and some self tappers.
I'm not sure what to do boxwise, I shall have to hit the local DIY stores and similar, and see what they have available.