Take in more calories from protein.

thats a whole lot of calories for somone your wieght. Not a flame but are you sure your really getting that many cals? If you are then your prob a hardgainer. Either way you know what has to be done so you on the right track. First off up the protien, also try supplementing with aminos. BTW how clean are those 5000 cals. Someone your wieght should be putting on some sort of wieght even if its fat. Another thing is switch up the types of food you eat, and maybe youv been doing the wrong workout routine for you. Experiment a little. good luck!