Please do keep us posted. I see no reason it shouldn't be a great touring bike if the load is kept at least fairly light. I do tend to think it is kind of pointless or even ill advised if you will be packing heavy. I'd be interested in more details both on what/how much you pack and what bike specific choices you make.

I am too cheap to build such a setup, but I think it would be ideal for my style of very light unsupported road touring.