I'm going to guess that when those new EU servers are made, what will most likely happen is that they will just transfer the current data that on the current EU servers and move them over. Just a wild guess, don't quote me on this.
Now..for the transfers. Seeing that you are in Sargatanas, which is not an EU server, most likely the current transfer rules will apply. Meaning, you will lose the house, the gil limit will be 1 million/300 something gil per retainer. There is no free company transfers because you have to drop from the free company anyways before transferring. If there's already a free company that has the same name as yours, you will have to come up with a new name and start from rank 1.