You say 3-4000 calories like you don't eat that much anymore
If you're 210 and 5 10 and have a day where you're running a 1" gun, that's a 3k+ calorie day without the training
I would pretty cut sugar and eat a fuck ton of fat and protein while you're building muscle mass
Buy gallons of whole milk, if you're running out of gas at work you could probably add a half gallon a day of milk to your diet
Gomad / gallon of milk a day roughly 2800 calories, so half that for a chubby guy shifting to toned
Only thing I suggest milk for is chocolate milk for recovery post workout. 24-32 ounces will do it .