Want to know the eligibility to appear for ca final

Respected Sirs,

Will you pls help to clear the below mentioned doubts?

I have registered for articleship as on 01-11-2013 and due date of completion is 31-10-2016, after clearing IPCC both groups. Now, I want to know is there any problem in appearing for CA final exams to be held in May, 2016? Pls help. 

I have also registered for B.Com with ignou in pursuance of ICAI's tie up with it. I came to know that within 1 month of date of regn, Form 112 is to be sent to ICAI. I've regd for July 2015 batch and how can I know the date of regn? 

Thanks in advance.