Would this work to loose 70 or more lbs?

hey basicly i 6 ft 2 and generaly largely built but i know iim alo over weight basicly atm i weigh 19 stone which s 266 and pounds and i want to get to 14 stone which is 196 pounds to do this i was going to try and loose 15 lbs a month which is like 3.6 a week is this possible? my idea was to consume no more then 1400 calores a day and try burn atleast 1000 would this make me loose 3.6 pounds a week also the type of food i would be eating would be either fish or steamed chick and various vegetables than you so much for anyone who gives a good answer... im also gona completely cut out soda and unhealthy snacks so if i stick to this i hope it would work :L