Also considering weatherson has built up to this system from other systems. The cost will vary on the exact same build depending on how much of the work you can do yourself. I mean like the demo, frame work, drywall, construction of the stand etc. Unless you plan to copy the exact way this build was done, it would be hard to estimate.
Pm weatherson if you really want to know, you may get an anwser, or an explanation of the stages that you may unclear of the costs. But I doubt any estimate will not be close enough for a budget considering prices of materials, labour and your access to equipment.
Also keep in mind, materials and labour prices will increase in 2 years, rises they may shock you.
HTH
Cheers
Chris