Yes Miscellaneous Permission similar to amagamation of Flats which is currently as per Ease of doing business grnatned under Fast Track approval in a day subject to Submission fulfilment
Air condition tonnage theoretically depends upon the orientation and sunlight penetration of the room. However, for a Livingroom of 500 soft and Bedroom of 150 soft you may consider about 3.0 tons and 1.0 ton respectively. The cooling comfort also depends upon the efficiency of the air conditioner.