I was about to offer you advice, when I recalled that I keep re-inventing my commuting gear all the time. Lately, I evolved into wearing jeans, for example, more often rather than bike-specific clothing. Also, very font of wool sweaters last few years.
I guess my suggestion is to let your ride and road conditions dictate what you wear and what gear you need rather than listening to the advice of others.
Congratulations on your success with commuting!