Neil, well done and good luck with the build. I was going to invest in the same model, but became put off with the CAD - bought the books, downloaded the reccomended program and then sat there - book in one hand, mouse in the other and a lot of hope, but to no avail. Even went onto You Tube to do the tutorials, but it would still not work for me.... I then spotted a 3D model of a subject and in the scale I wanted, but it was neither here nor there, once all the parts had been removed from the 'sprues' and the excess cut away I finished up with basically an item that had not been researched correctly, was not in scale and totally useless, and at £60 never again. Alright I have learned my lesson both in expense and in time, just one mans example of total failure with modern tech.
And like JR, I am now a recluse as far as modern tech goes, these all singing all dancing squint your eyes at the screen are not for me.
Mike.