It is terrible time to start grass in Ohio. You will need to water for at least a month. For remote location, I have used 500' of 3/4" hose with decent pressure. How large of area are you trying to grow grass?
I agree....that's why I'm looking at how to get water out there now, instead of in August. Plus I need to address the compaction in the soil and get my soil samples back to see what I need to add back in the ground.