Shakes can be pretty caloric depending on what you put in
How to Add Calories to a Protein Shake With Andrew Lewis - YouTube
Get your protein intake to 200g, because that's what you're going to be anyway and it doesn't hurt to have extra protein.
Eggs are cheap, fast to cook and eat. It takes me 3 minutes to cook 8 or 9 scrambled eggs with butter, and about 10 minutes to eat them. That's 50 to 60g of protein and 500+ kcal, and not too heavy on the stomach.
Add a snack here and there, you'll get to 3500kcal easily. You wanna put on 4lbs a week instead of 2lbs, and you'll be at 200lbs in 2 months and able to progress for much longer.
I'm pretty sure you just gave up on your deadlift when it got a little harder, because it shouldn't be only 10lbs heavier than your squat, considering it started 60lbs heavier. Figure out a way to pull that set of 5 at a heavier weight because you very likely can and should, since a bigger deadlift right now means more overall strength on every other lift as well.
When bench and press get hard, microload, get all 15 reps, switch to 5 triples, get all 15 reps again. It should buy you some time.
Don't fuck around with cardio or other cooler sounding programs, you got a long way to go and you should be happy about it