RE: Super Cub
Your field is about as small as you would want to use, but it should be OK. Hopefully, the long direction is the primary direction of wind as well, allowing you to take-off and land along the longer direction.
I would but a couple of extra props, an extra battery, a roll of clear packing tape, a package of 5 minute epoxy, a bottle of Foam Safe CA and a bottle of "Kicker" for the CA.