Jess
It is difficult to suggest what else you can do. Working as a TI and gaining relevant experience is fantastic. I don't know what to say re courses etc. I have always felt that without relevant clinical experience courses are not really worthwhile for new grads until you get this clinical experience. However, this is only my viewpoint and some employers may feel that it may give you the edge over other applicants. I would choose courses carefully as they are quite expensive and not always relevant to the work you will be doing.
Greg- I wouldn't bank on being chosen over UK grads as many employers are loyal to the UK grads as the physio training here is NHS funded!
Good luck to you both.