Hello Grubbie, this is Mr HD replying. Recommend killing whatever is growing there in the fall using a herbicide like roundup or maverick. I missed this step myself because Mrs HD still wanted her cows to graze this 30 acres as long as possible. But I definitely recommend killing what's still there. I then worked it once with a 10' offset disc using a IH 1586 tractor (161 hp) We have fairly hilly land, so to break the sod you need horsepower. Next step was to spread all of last winters manure on this thirty acres, followed by another run with the offset disc. I left it like this over the winter, to let the frost break up all the big lumps. First thing I did this spring was to work it one more time with the offset disc, and followed that with a run with a 24' cultivator with mounted three bar harrows. Then it was time to seed it. I seeded it to alfalfa timothy orchard mix underseeded with oats. What I use to seed is a spinnerstyle fertilizer spreader. I rent it from the local fertilizer dude for about $80 a day. I take my seed over to the fertilizer place and have them blend the seed with a basic mix of fertilizer and load it in the spreader, which I then pull home with my truck, hook it up to the tractor and wait for a nice quit evening with very little or no wind and broadcast the seed along with the fertilizer. If you're gonna do it this way, keep in mind to keep your row distances shorter than you would with only fertilizer because the seed is lighter and doesn't fly as far. Next I harrow it once and then load the oats covercrop in the fertilizer spreader and spread that, and harrow again for two or three passes until it is nice and level. Last step is to use a landroller and roll the rocks down. I hope this will help you out. It seems like a lot of work, but it works here in Alberta.