Horsepower
If I remember right from my high performance course in the US a few years ago, the Arrow gear creates the highest amount of drag whilst in transit and that operation takes quite a few seconds. (13 or so??)
Therefore I would be with you under the circumstances, with the only difference that I might consider cleaning the wing completely before gear retraction, as it only takes a few seconds to secure the airspeed and set the target climing speed after retracting the second stage of flaps.