Talked to Chet today. He's making a run to a couple other ponds with his truck, and will be able to meet in KC, which will save me ~6hrs round trip vs. going to his place.
My time on the road from picking up fish to home should be ~2hrs. I'm bringing my own water. He told me adding salt would be good.
It only took 150 gallons to adequately submerge my pumps. Based on Steve_'s math 50oz will be about right to hit the low end.

I'll report back with results after I get home on Friday.