I can't advise on the grain, but there's a propane filling station on Vincennes, just a few blocks north of Armory drive. They charge $10.16 to fill a twenty pound tank, so bring yours with you if you can.
Also, be aware that this is a warehouse, not a commercial facility. As a result, you need to place your order ahead of time so they know you are coming. You call the 800#, place the order, charge it to your credit card, and then stop by to pick up your malt.
Funny thing, they've only had that location for about 8 or 9 months. When I called the 800# to order my malt, the lady says, "Now, how will you be paying? We can take a credit card over the phone, but because they are a warehouse, they can't accept cash or anything like that. Maybe, well, I guess you could just give a check to one of the warehouse guys and they could mail it to us.. if that would work for you. Either that, or I guess a credit card over the phone, whatever works for you...."
Neat place. I took pics of the warehouse. I might start a thread and post them...