Buy corn. Probably work better for you. Might try hay as well. the acorns are not that much of an advantage under the condition you describe. be better off going with a food they are more familiar with for greater utilization. Fair chance they won't even eat an acorn from another area and handled by a human.
Best bet is to check with your local area biologist and see what he reccomends. Also make sure it is legal to feed deer and if it is even neccessary.