What is your GAT score Momo, Yes finding professor in the Field of Business is a very difficult thing. AIT is good option just look into the faculty of AIT. The proposal you made must be accordance with the available faculty. China and Turkey are the available option that i didn't checked hoping something good with happen if we select from these.

Yes momo some universities in France demand fro GRE and TOEFL. Some professors of France told me to apply in their formal process for getting admission in PhD. that formal process demand GRE and TOEFL/IELTS.
I have got 76 in GAT but my GRE score is not much attractive. So first make good preparation for it.

Yes you have to get print of online submitted form and attache all relevant documents.
and pay the required amount i.e. 200 in HBL given account than they will give you slip you have to attach that slip as well.