That would be in the subscriber content on the MR site... I suppose if someone felt the need they could surrepticiously download the file and email it to those lacking such access... Not that I would ever recommend such a thing...
It is a cool plan, and I have a copy of the magazine where it appeared. The room looks a bit larger than your available space, about 11 x 13, but it's also an HO scale plan, and sort of busy at that. Since you have roughly 2/3 that space and your working in N, you should be able make it a lot more spacious looking.
I would leave out the tiny corner staging accesses, though, and just use a divider you can see over if you need to.
Lee