Orion: 10 Sqn had disbanded as a Victor squadron on 29 February 1964, so any deployment in August must have been 15 Sqn on its own.
Pontifex: Noting your point about underwing pods on the Valiant, C H Barnes' highly detailed "Handley Page Aircraft Since 1907" mentions that underwing bomb pods carrying a further fourteen 1000 lb bombs in each were also considered for the Victor but never manufactured for trials. And, given that WW2 was not in the distant past back then, he lists alternative conventional loads to the thirty-five 1000 pounders: a 22,000 lb Grand Slam, or two 12,000 lb Tallboys, or 3 10,000 lb HC bombs, or even seventeen 2,000 lb Type S mines. But nothing is said about how many of those weapons still existed in stores by the mid-1950s.