You could drop both Cara's and go with Munich, 10L or 20L depending on color. I usually go with 10-15% or so Munich.
I also like to add flaked rye especially when brewing session ales.
Last session I brewed was below:
50% Pils
20% Maris Otter
10% Munich
10% Golden Naked Oats
10% Flaked Rye
S04...