I'm in the Grenada/Greenwood area. I do come up to Batesville from time to time to slide the old Lowe's card. I'd be happy to take it off your hands if it's in the way.
Never turn down free materials. I'm working this weekend too, and a mandatory training class Saturday.
One of the A/C guys at work has my 5k right now to suck the 410A out of it. If it doesn't work for the water heater then I'll build a chiller for a shop computer cabinet out of it.