Congratulations. I'm guessing you may have ordered from Lowdhams. We waited 8 months for our Trtion from them so 5 months is not that bad. Ask about a service contract as they do a good deal. We are paying about £240 a year for 5 years which initially sounds like nothing special, but this includes the Hymer water ingress test so undercuts other dealers by £100/150 a year.
If you are after an awning then Dean in the awning department is worth talking to. We had one of the first Kampa Pop-Air and it was not good experience. Kampa have now corrected there errors and it is now a very nice piece of kit. The matching awning carpet/groundsheet is excellent, but DO NOT get the Kampa gutter strip or tie-down/storm straps.
Colin