I wish that its not too late....you can check the deadline for your documents to be received in my nait portal.hey no need to send career investigation report ,it can be sent through email. also xerox copies of ielts score card(notarized) is enough. send all the educational related documents .I don't know about the work experience certificates, whether to send it or not,but i think those are not required. send them as quickly as possible and try to apply other colleges too...keep a second option also.