Charles,
Grass at field IS like asphalt. It's about 1/4 inch high, and would offer no problem for you.
Prop clearance, from the photos , looks like you have a foot of clearance, LOL.
As you know we are at the field on Saturday mornings. I know you work some , so how about this coming Sunday morning, would that work. Would love to catch up with you. I will have my electric Shark. Maybe
Dennis can come too.