Tampa, k/d doesn't really matter in truth.
I mean, it depends on the competetion you face.
If you play only during the early hours, you can easily get a 4:1 K/D ratio since not much good players are online then.
As for clan joining, since i'm new myself i dare say i don't really have a say in it yet.
That said, i'm good with just about anyone, as long as they don't noobtube/proxyton all the time.