Do you know, the reactor for Arihant class was developed by BARC and there is only unconfirmed reports about the uprating reactor to unconfirmed level. Right now, Indian Navy denied to find the new development of reactor for IAC-2. So, why should BARC go ahead when the sole user of the reactor denied for the funds? You should know that the area you are quoting again and again is calculated as the total surface area of multi storey Carrier. Rest I can assure that with the present scenario, you will not have complete IAC-2 before 15 years from design phase.