As bigbeergeek stated, none of those will be the same as Cascade.
Goldings would be your best bet for an oatmeal stout but you don't have near enough.
You will probably need another 13-15 grams
Wayne Gretzky-"100% of the shots you don't take, don't go in
Revvy>>You shouldn't worry about ANYTHING, you didn't hurt the yeast, they know what they need to do, they want to eat all that sugar they are swimming around in. They want to pee alcohol and fart co2, it's their nature.
Bobby_M>>I flood the keg with CO2 for one minute with the lid off, rack the beer in to the bottom gently, seal it, flood it, vent it. If there's still O2 in there after that, F it.