Not too sure if I'd agree with that route, barshaker, new A130 sounds OK, but I'd not want to negotiate Chelmsford town centre, then the A130 and the roadworks on the A120.
Personally i'd go A127, M25, (wave at Stapleford on the left), M11, (wave at North Weald on the right), and the next junction is Stansted.
Alternatively, A127, new A130, A12, M25, M11, they are all fairly fast roads.