I have about 15 acres of pasture/fields in central Virginia that haven't been mowed and were only minimally grazed (by horses) for many years. I've spent the past year or so cutting monthly with a John Deere 5205 and a Woods 84" rotary cutter at progressively lower heights (I'm now at about as low as I can get with it). This seems to have taken care of most of the more scraggly stuff (privet, nettles, etc.) that had been growing in the field. Still there's lots of thatch and the grass is not that full or green. What should be my next steps to improve the grass? Get a finish mower to lower/improve the cut? Get a rake or other implement to clear some of the thatch? Rent some sort of aerator to open up the soil? Get a soil test and lime and/or fertilize? Overseed? And in what sequence should I start with any or all of the above? I'm new to all of this, so any and all advice would be greatly appreciated!