If I was you the only thing I'd do is swap tyres and crankset. Get BB30 checked over by a good shop. 5800 is plenty good.
Chainset is fine, best to just take it apart, give it a good clean, greased, and installed as per the manufacturer specification.
@edscoble started
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If I was you the only thing I'd do is swap tyres and crankset. Get BB30 checked over by a good shop. 5800 is plenty good.