A lovely concept book!
I saw that you were looking for an artist and a programmer to realize those ideas. Can't do much about the art, but regarding programming: have you given Ren'Py a chance? It's a pretty straightforward engine for VNs that doesn't require much programming skills and there are plenty of tutorials available online. It will need some time to get used to it, but after that, you can easily code your own VNs. Best of all: it's free!
A friend of mine is drawing art and doing the code for her VNs (I did the soundtrack for some of them) and she learned to use Ren'Py without any real programming knowledge. I'm confident that you can learn it as well! =)