IF you have the $$ go for it. But confidence comes from shooting. Like every day and I mean every day. Hit up some 3d shoots in your area as well to get more confident with judging yardage and aiming at something other than a bullseye.
Go to Michaels or Hobby Lobby and find the best looking grass they have available. Pick up a gallon of wood glue and mix it with topsoil to make a mud. apply mud to top of barrel and press the base of the grass into the mud. Then you can paint the mud with wood glue again and sprinkle dirt/top...
For degreasing look up Trubond. Lipi solve 77 and 55. Get them both and use a 5 gallon buck with an aquarium heater as previously mentioned. They are the best that I've found besides trike.
Not new but been quite some time, couldn't remember old log in. Been battling Lyme for a few years and it really took the wind out of me. But the fire is back.