Don't leave OEMs on the rear either... you may find the significant increase in oversteer while breaking upsetting (granted it's MUCH worse in mid-rear and rear engine cars).
Red Stuff are their middle of the road solution. If you're going to be racing on a circuit for an hour straight in 100+? weather I would probably step up to the Yellow Stuff (maybe even Blue Stuff). The next step up from there would be Porterfield (R4-E's if you're a real baller & badass) but I don't think you need them.
As for swapping them out, I wouldn't unless you're going to be swapping a set of rotors in and out too... For optimum breaking I would avoid allowing lesser pads to bed in with their lower friction material.
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