I bought the 50 pounder you speak of. Its a lot of malto. You better have a plan on where your going to put it.
I will say that next year after my 50lb bag is gone. I will not do it again. Its cheap as hell. but a huge pain in the ass. I basically put it in my empty protein containers. I have about 20lbs left to put in containers when i get them. I could have just kept it in the bag, but i was afraid it wasn’t sealed well enough. It will probably last me about 18 months total.