Hey Mr T
Sorry may be a bit late for this thread, but just joined. I have E92 335i N54 2009 DCT as well. few watch-out's. Mine reaching 200k on clock, but still goes like a dream.
Electronic water pump, Thermostat, PCV valve, Valve cover gasket, Tappet cover, power steering pump. These all were acting up in last 6 months.
cheers
Lenny "M"