Flank Steak Ranchero Burritos

Name: Flank Steak Ranchero Burritos
Ingredients: 1 2 pound flank steak; Salt Pepper + Chocolate Chile Rub; 1 cup long grain white rice (rinsed); 1 1/2 cup water; 2 tablespoons finely chopped cilantro; 2 tablespoons lime juice; 1 teaspoon kosher salt; 4 roma tomatoes (diced); 1/2 white onion (diced); 1 jalapeno - seeded (stemmed, and diced); Kosher salt for seasoning; 4 cloves garlic; 2 pasilla peppers; 1 jalapeno; 2 slices white onion - dice the remainder for the pico; 1 28 oz can crushed tomatoes; 1 tablespoon cumin; 1 tablespoon Salt Pepper + Chocolate Chile seasoning; 1 tablespoon ancho chile powder; 1/4 cup olive oil; 2 large avocados (sliced); 4 12-inch flour tortillas; Mexican crema (for garnish); 2 cups shredded Mexican cheese blend; 1/2 cup Cotija cheese