I tried this deck and I think it works excellent, I had no Fahrenheits though so I replaced them with fire shields.
If you're just replacing fahrenheits with fire shields, that may not be that great of an idea since you're adding some pure defense in a rush deck. Fire bolts are quite flexible to be used as offense and defense, but a fire shield is a pricey 6
slow whittler. You could always try regular shields (at a sixth of a fire shield's cost), or even short sword (1 quanta 3 damage).