all the documents must be original for all the stamping both from Phil and here in doha but when you start applying for the visa you just need the photocopy of all those documents. (never submit original coz you might need it in future). when they get here before consuming 1month u can extend the visa til 5 more months so total of 6months. its up to you but as i know they charge 200 qrs per month. good luck and God bless. take care.