As per this recent announcement, the access restrictions from Pokemon GO players to Wayfarer will undego a change. So you might just have to wait a little longer to be able to organize a few players to participate in the programme:
In the meantime your best bet would be to ask the international community to set their bonus locations to Pakistan, so they can review your country instead. The review distribution system will not allow them to review your nominations directly, and there is no particular order either.