I'm 6'6 and weigh about 175.5

First off, 10,000 calories is stupid and unrealistic.

Second, calculate your TDEE on google - factors included are your age, weight, height, sex, and activity level. Roughly, your tdee is 2500 to 3000, and you need to eat +500 to that amount to gain 1lb a week. Protein alone is good for building muscle, but without an caloric surplus, YOU WILL NOT GAIN WEIGHT. That means you need to track everything that goes into your mouth, so you know what it is like to eat 3000-3500 calories. Get a food scale, use myfitnesspal religiously (at least for 1 month), and weight yourself weekly (weight fluctuates daily, so I prefer weekly).

Foods for easy bulking:
-Peanut/almond butter (get natural kinds, tons of calories per table spoon with good fats and protein)
-Olive Oil - 1 tablespoon is 120 calories! You can take 5 tablespoons before bed and that will shoot you up by 600 calories. Lots of good fats in this too.
-Whole Fat Milk - Protein, Carbs, and Fats. Great pre and post work out.
-Protein Powder, chocolate is always good with your milk, get some additional protein in your diet.

-Shakes - combine everything I said above into a drink: whole fat milk, chocolate protein powder, 1 banana, some frozen spinach (you don't taste it at all!), a tbsp. of peanut butter, and some olive oil if you need extra calories. Depending on what you put in, that's like 600-800 calories, drink format! So you can have it between your meals.

This is of course on top of a healthy diet... these choices above are to help you get those extra calories in.

If you bulk too fast, you gain too much fat since the body can only produce so much muscle at a time, so don't go over 500+TDEE calories. Of course go to the gym, bulking is optimal time to build muscle. I'd recommend a program like ICF5x5.