Late advice - I have a pH test kitat Wal Mart, Lowe's, Home Depot, etc. It's was cheap. I am not sure if these have any tables to assist in determining how much per acre it'd take to correct. I figure you could find that info on-line somewhere if needed. For sure it would be best to pH correct, and then select the food plot plant that will grow best in your area.
Downn our way Iropn Clay peas in summer ... and 50-50 Wheat-Oats mix in fall is a simple mix that does a pretty good job of attracting deer.