Down to the last unit will perhaps not make it. In your case I would approach the issue slightly differently, and end up on the nose with the resource requirements. Remember that the "shopping list" includes whatever necessary for one
item, components and sub-components included.
So, as I mentioned earlier, there is a limiting factor, and i this case it cannot be surpassed. You need 12 identical Small Structure Storage Module per deed. That limits the number of possible deeds from one manufacture schematic to 82, but you need to include that one "crafting deed" in the math. OK, each batch takes 83 times the shopping-list.
However, you wanted 250 deeds, then you need to make 3 different batches which will give you 246 deeds which is within the 2 digit precision in 250
End of story:
83 * shopping-list gives X
3 times X gives what you are looking for. Except one thing: only the "lost" components are included, not the sub-components. In this case you know how many walls you need, and for every 100 wall you loose one Structure Module, so 3*83*18=4482 walls; 4482/100=45 (one extra is necessary) =>
45*50=2250 Steel and 45*200=9000 Low-Grade Ore to add to the heap.
Hehe, yeah, I will try to remember this topic when I now finally am back ro coding at schematics in SWGAide:
/tell self "Zimoon, remember to account for 'lost items" when implementing the shopping-list"
Good luck though. I have slowly been doing the same batches for my mall, taking forever with those walls and the too little time I have to spare on it. Running two factories a day for a week just for the structure modules, and that is one batch. You are heading for 3
Don't expect them to sell out in a snap if you also want some return on investment on those resources. I am planning to sell my elite chems for 350k a piece, but that will still just get me 4.64 CPU back, of course the recycled stuff is included but it is also a tremendous lot of work for 82 deeds