Scale EDF fast jets are about the hardest RC models to fly you could pick. If you are not a very experienced Rc flyer then there would only be one outcome from trying to tackle a plane such as this.. unless you were incredibly lucky you would write it off on it's first flight. My strong advice would be to pick a very different model to hone your flying skills.
if you are determined to proceed with this one then 660mm is really too small for the EDF unit you have. this would produce a model with very low wing area and so high wing loading which would be very fast but also very hard to fly. i'd advise to make it larger, maybe 80cm span, possibly bigger if you build light.