By cancelling the first order of the compressor and ordering again, the new compressor arrived yesterday (in the specified two days), and works well. It's a lot smaller and a lot quieter (old compressor with 50l tank shown behind the new 24l tank unit). You can tell it's on, but it's more like a quiet diesel car idling than a small pneumatic drill at 20 metres.
And as yesterday was a great spraying day, I applied yet another three coats to the body. It's looked rather like this for the past 3 months, so I'm really keen to get this finished!
Tomorrow I'm going to lightly sand down the roughest parts of the paintwork (it was basically flat before spraying to start with) and then spray some clear coats on top. I normally wouldn't clear coat over a solid colour, but I've now used up the last of the Sonic Blue, so if I sand through on an edge again then I'll need to buy another another tin of paint. So as I've got lots of clear lacquer available, some extra protection for the blue it shall be!