In all fairness, it might just be easier keeping the Brembo setup as it is and going for some Performance Friction front discs or DBA discs, pushing out the calipers etc creates a lot of work, worse still your wheel may not fit over the widened Brembo spacing.
There are lots of discs to choose from in standard size fitment, this aided with some pads such as the Ferodo DS2500 pads will make a big difference…