We have had good rain all summer up on the farm. The last two weeks have been probably the driest all year, but still getting some rain.
As for NWSG - native warm season grasses. It take 3 years or so before they get really established, spending the first couple putting roots into the ground. We are three full years in as of this summer and I'm fairly pleased with the results - remembering we did this with an ATV and ATV disk and without the proper seed spreader. We had lots of deer in them last fall, and the deer were comfortable enough in them that on the second afternoon of gun season as I drove my ATV to a 10 foot tower stand to resecure a blind, I had a buck walk by no more than 30 feet away and stare at me as I stood on my ATV. They don't look pretty though for the first couple of years, you have to be prepared for lots of weeds and just let things take there course until the NWSG start to take hold.
I'm saying all this because the NWSG would be a good choice as something that doesn't require a lot of management. No haying, no grazing. We will put ours on a 3 year burn schedule. Missouri Department of Conservation should help you pay for installing them, seeds are not cheap. 70 acres would be a huge amount and fairly costly, but MDC would probably jump on it as they see NWSG as Quail restoration. They've also been good about allowing us to charge for our time, so we have been able to get most of the materials paid for so out of pocket expenses are small.
We plan to try to establish another couple acres this Fall/Winter with a lot less work then before. Will Roundup plot next trip up, then again in Fall if necessary. This winter, probably around February or early March will frost seed the NWSG. The PLC says he has seen others have good results with this method, and it's a whole lot easier than the disking and such we did before.
If you could put together 70 acres of NWSG, I'd say you'd have one heck of place to hunt deer. Especially if you had timber edging it.
“There are two spiritual dangers in not owning a farm. One is the danger of supposing that breakfast comes from the grocery, and the other that heat comes from the furnace.”