Hey Rynne, welcome.
We're in similar shoes, except I never played any of the 3DS games until now. I just beat XY and currently playing ORAS, and will likely pick up US/UM soon.
With regards to transferring Pokemon, you can transfer from X/Y using PokeBank.
F̶r̶o̶m̶ ̶B̶l̶a̶c̶k̶/̶W̶h̶i̶t̶e̶,̶...