I tested it and I have BAD BAD BAD NEWS:
The GTS Doesn´t works! I think the creator of the patch destroy all japanese text files and put the US. No no no BIG error
You MAY overwrite the japoenese files and if any japanese files get out, conserve this in the rom, DON´T DELETE, now if you go to GTS "Blue NDSCreen of dead (xD)" appear and CRACH -> Return to the menu
If you save in the text of "badges, name trainer, etc. appear in WIHITE (because the owner of the program destroy this japanese texts...)
Altho, in the posts and letters in the game (example "Rute 201 -> to Tute 202") appear in WHITE
This is my report, please fix it
BUT I tested others thinks and obatin WELL WELL WELL NEws! =D
All Pokedex translate
All battle attacks translate
Items full translation
75%* of the people in the Sinnoh talk english
All city in english
I think that is a GOOD Work, but if you fix this problems, the work will be PERFECTLY
I am spanish, if my english sucks sorry i can not do more
--EDIT--
Hola Rigle93 xD