WK, one thing to consider. Will this buck be able to see your pop up blind before he enters the property?
You said this land was flat grassy with no trees. If he sees that pop up you'll likely never see him again.

If it were me, I'd lay on the ground at a good ambush point with my head elevated so you can see all around still then sit up to shoot when the time comes. I practice this shot a lot - I also hunt flat grassy areas with no trees.