I have just finished this Bottlehead Crack. Default cabinet with three layers of chestnut wood stain, five layers of spar varnish with 400 grit sanding between and a polish of the varnish after a week of hardening.
The panel has been spray painted with 8 layers of hammered dark grey paint.
I'm going to install the Speedball kit this week, along with two Mundorf 100uf 400v. In a day or two I will post a link to my blog with lots of pictures and detailed description.
Hope you like it.
Btw. there is a little distortion or maybe sibilance on the highest notes (above 9-10 khz). Is this because the caps aren't burned in yet? It has only been used for 2 hours.