18k. Wow, you had more than I did...
Well, let's see: Rescue is a definite option, Ulu Watu's also nice, Junkz, Sentinel's.
But really half decks is the way to go They combine two clans together to give you and awesome hand.
Just so you know, Skeelz/Junkz is pretty good. But really, choose something that cooperates with your play style, though I recommend getting an Attack Manipulation clan indefinitely with ELO this week, seeing a lot of Montana...
And just so you know, if you're not a good player, than no matter how many decks you buy it won't matter. If you're good, than almost any deck will work. So good luck!
(Can;t give you a deck, since I don't really know what you want...)
I would advise against Rescue or Sentinels.
Rescue have been hit hard with the bans recently so they are definitely not what they used to be. Also there are a lot of Nightmare around this week which probably makes them nearly unplayable with Kerry Sledg and Lea all banned.
Also, at least until they get Lehane or Copper back Sentinels don't really have much going for them either. If one likes their bonus, Junks and Sakrohm are probably much better options.
For a deck with good Power and Damage you could try Bangers but I haven't played them myself so I don't know whether 18k will make a good deck with them or not.
Here are the decks that I have been using this week:
I think they are both okay. The Pussycats one actually got me up to 1388 but since then I have slid back down.
Mono Vortex would probably make a good elo deck, though it will definitely be a bit worse if Dagg is banned.
I don't know if it is easy to make a good mono FPC but I have seen some people make pretty great FPC half decks. La Junta is better for mono, I haven't played them mono myself but they look good in mono.