What are you removing the radiator support beam or the whole thing to replace as you can just undo the bolt on the side and the two forwar vertial bolts just put a strap around the rad assembly over the slam panel to take it weight when you remove the support beam.
Do You think you can spin the radiator bracket around to point to the rear and cable tie it down the profile of the other part that holds the subframe minimum hassle and the original rad support can be put back on. Or put some support under the frame and do one side at a time or felling full race use it as a support for air brake duct supports ( 4" grinder cut it off).
Another thing to think about is the sump guard bolts into the rad support legs so your running without protection for the engine sump from rocks and impacts, aux timing belt from tiny stones that can get under the belt which can cut it and jam the timing, also the plastic inner arch protectors button to the legs lastly for a horizonal object like a speed bump can hit the sump drive the engine back and also directly damage the exhaust system along with the engine mounts.
Not wanting to be negative about the whole thing just there is a lot of other things to think about and accept when you bolt on Clio cup style parts