This is not a thread hijack, nor am I trying to change your mind as far as your business plan goes... but if you're trying to develop something nacho-like, the old school nachos I had had as a boy in south Texas are nothing like they have evolved into.
True nachos are a joy to eat, both flavor and texture wise and may give you an edge in your catering business because they are so unique. To make an authentic nacho, tortillas are cut into quarters and fried to make chips (however there are plenty of triangular chips out there that will work just fine). Anyways you layout chips on a baking tray, add some cheese to each one, then top with a single pickled jalapeno slice and bake until the cheese melts. Some meat or a refried bean/meat mix is optional, and this is where your barbecued meat could come in to play. In other words these are individual chips which are dressed. I sometimes use "Scoops" for my nachos as they hold a little more and you can get about 15 on a plate.
HERE is a food blogger that has some great photos of what I'm talking about.