I don’t think it is really needed, of course do as you please but I think, even though the movie wasn’t perfect, those aspects are really important going forward into the rest of the DCEU.
If this is just for fun, fine but if you are planning on this being meant as a replacement for the original it won’t be coherent with the rest of the films and kinda suck.
P.d. I really liked the Extended Cut. Just my opinion