I'm a little concerned about the inclusions. They look very obvious in the picture. (and yes I know that it's magnified...but still)
I was told that the "Nature of the SI1 is white and its 100% eye clean."
Eye clean depends on the person and the types of inclusions. I am often able to see inclusions on VS1 diamonds and as such went with a VVS for me soon to be Fiance (hopefully). As long as they have some sort of return policy, you should be fine there.