Looks good. IMO, I'd like to hear more tone out of the exhaust than stock, not overly loud though.
As long as it is bolt-on and produces more power, I'd be happy. Personally I do not want to cut anything on mine. Seems like there would be a good place for a bolt-on right after the cats and before the AMG resonator.

As far as the tips go, I always thought the SRT6 should have had different tips like the Porsche Boxster and Boxster S.