I really think that the coopers cerveza is not light enough to be classed as one to start with.
1kg of malt ? Way Too Much imho.
I kind of agree with RWH of using be1 and think that the coopers recipe (using BE2) is too heavy for the style, still nice though.
maybe if you used the morgans recipe you could just use a kilo of malt and the Morgans canadian light.
Good you are using cascade hops for the citrus flavours.
1 x Morgans canadian light.
1kg body brew (60/40 dex / maltodextrin)
400 grams dex (makes up for the light kit)
1 x SuperAlpha finishing hops
goes off like steam beer !
ultra light in color and body.
strong grapefruit aroma's due to the SuperAlpha hops I guess.
Cheers
501
