I would advise you to wait, because none of what you posted is really a good investment.
Having said that, I get that sometimes you just need to get out and play, and you need a gun to do that, so....
I would have to say Kraken, noisy or not, the others are basically tossing your money, not to mention the risk of used gear. It's the best investment you can have for the dollars you have.
If you just want something for the game, I'd go with the Ruger. It's decent gun and the cash you have you can buy the propane adapter and gas. Plus it's a better option if you are doing a sneak and peak.
And you will look all Rambo attacking a village with nothing but a pistol