727 Trans Fluid Capacity

A question,
When I go to fill up my 727 transmission,how many quarts should I buy and what type do you all recommend?And also,I know I need to fill the torque convertor,but how much fluid do I use?I dont want to overfill it it and have it blow up or something,lol.And when Im ready to connect the transmission to the block,how do you all do it?Do you connect the torque convertor to the flex plate on the engine first?Or put the torque convertor on the transmission first?Thanks