That's not something to worry about cause to be honest I plan on staying for a long time. It's funny though because I'm pretty confident with my Smash game and if I ever have issues I lurk before posting. So I might end up having a higher post total towards this thread vs actual Smash.
A lot to put it the simple stupid way. You probably have a fast metabolism and you have been going to the gym so I would suggest trying to tack on a 4000 calorie diet consisting of mostly protein, fat, and carbs in a 50% protein, 30% fat, 20% carb ratio. It's fine if you use protein powder but try not to substitute calories with a mass gainer simply from the cost perspective of food being cheaper (actual groceries, white rice & red meat a best) and 4000 is actually pretty doable to the average person i.e Cleaner fast food (just stay away from unnecessary sugars). That's what will give you a lot of bad weight, fat is fine because it does boost lifts but I'd stick to a 15 - 17% bf bulk. As for finding it difficult to eat I would suggest make actual times, you don't have to take it all at once but it is possible to eat 1000 calories four times a day. You can mix it up just be careful about carbs Wake up like 6 am, eat lunch 12 pm, dinner 5, and before bed. Breakfast use eggs, red meat, and white rice (1/2 a cup tops) glass of milk and try to hit 25 g of protein. Lunch: I like to get a protein style 4x4 In'N'Out burger for pleasure sometimes, 800 calories 40 g protein. When I don't get that I'll have more red meat, HEAVILY BUTTERED steamed Broccoli/Boil Spinach, Butter High in Fat + Calories. Hit the gym like 2 hours later (you can do after dinner if you want, or any time really just make sure you're spacing out your protein. Wait like an hour then take a protein shake 2 scoops, most commonly it'll estimate 150 calories + 50 g protein, you can use milk to add more calories but adds bit of sugar & extra protein you're going to pee out. Note: It's complete bro science of having to take a shake immediately after the gym, your body processes protein the same no matter what. Wait another 2 1/2 - 3 hours, White meat like pre made chicken breast pieces (spice it up because plain chicken tastes boring), more butter sauteed vegetables, and another 1/2 cup of white rice. Then right before you go to bed eat more white meat (potatoes if you can but salt them) and another cup of whole milk, the calories at night from the potatoes as well as the rice through today will most likely be stored as fat as lifting probably only burns 150-200ish calories but that's what you want. Stick to a diet like this and you'll put a lot of good weight, and some bad weight but that's what cutting is for. If you're wondering "but boiling/steaming vegetables take away the other macro nutrients from it" to be honest vegetables take up a good amount of space in your stomach and you can get the other stuff from multi vitamins, might as well make the vegetables calorie'd up.
You're welcome,
Sincerely Muscle_Senpai.