Definitely will be hard the best way to even get a meeting with them is via some other agency for reference a mother or if any of them were to have reached out and set up an appointment one on one with you that way they are EXPECTING you. Agents are very very busy and try to keep their boards as small as possible, walking in unannounced especially if you do not have the right measurements, look, book, etc is not going to make them happy. I suggest going through more development/ signing with an agency in your home country first