I have no experience with flour tortillas but we do make a breakfast taco that gets raves:
--Eggs, beaten with a little salt and a good dollop of oil to emulsify them and prevent sticking, two small ladles, fried on cast iron with no addl grease, takes about 90 seconds
--Chorizo, fried ahead, this is a Mexican breakfast sausage, the local Mexican market makes a killer chorizo @ 3.99/lb bought fresh at the meat counter
--Salsa, a Santa Fe style salsa I make myself, white onions, green onions, garlic, green chile, tomato, some red jalapeno if you can get it, and tomato (no tomato sauce)
Load this up on a couple white corn tortillas, wrap in foil, they not only keep well they get better as they age. Profit margin on these things is outstanding.
Tamale Trolley Food Truck