Awesome oil cooler setup, My dad has one on his DC2, quality is also very good between the fittings etc... and comes with braided lines. The only thing I can think of being a minor issue is mounting the radiator as it may be designed to be a direct fit onto an eg/dc chassis. His setup has been on the car for around 40k miles with no issues and a few trackdays in between. On a hot day the temp still exceeded 120 degrees, but rarely rises about that.
Although If I were buying new I would buy mocal/setrab simply because the greddy setup will cost 500-600 new which IMO isn't worth the £400+