I would suggest looking into grasses that are native for your area, and also clover and vetch. Native grasses will be drought tolerant than Bermuda (which is tehnically an exotic) and will have a longer growing season. Many people mistakenly consider vetch and clover to be weeds but they are actually in the same family as alfalfa, with comparable protein levels. They are also a living fertilizer, which is great for a sustainable Ag operation. Clover and vetch pull carbon dioxide out of the air and store it in root nodules. That mix of clover, vetch, native grass, and a little Bermuda makes great hay too. Gonna be bailing 85 acres of it tomorrow. There's my 2 cents.