Not according to the RAAF studies. Greg posted sometime ago a link to the RAAF report comparing the various contenders to the competition that the F-111 won. The Vigilante lacked the range and performance requirements that were set out by the RAAF. They wanted an advanced, supersonic attack aircraft with terrain avoidance radar that could reach southern China from Butterworth. The Vigilante was a high altitude, supersonic attack aircraft without terrain avoidance radar. It was also already IIRC already out of production, which is always the kiss of death as far as the ADF is concerned.
The RAAF recommended the Vigilante to the Menzies Government because it was in service, in production and could meet the requirements. The Government thought the RAAF was trying to do them over and then ask for another aircraft in the 1970s so chose the developmental F-111 which was sold as far cheaper and more capable than it was.
The Vigilante the RAAF looked at was the A3J-2, later renamed the A-5B, which fitted with a recce package was produced as the RA-5C. The Vigilante had a low altitude attack capability and the A-5B was ordered specifically to boost this after the withdrawal of the nuclear attack role in 1961. The A-5A had an automatic terrain avoidance system and with the pilot’s HUD (first aircraft to have one) was the best high speed low altitude aircraft until the F-111 came along. It didn’t have a specific terrain following radar because they didn’t exist at the time.
As to radius of action the A-5B on a hi-hi-hi mission with buddy refuelling rom another A-5B can reach 1,530 NM with the last 100 NM at Mach 1.5 and >50,000 feet (which uses about the same fuel as 100 NM at sea level and max speed). This is enough range to hit anywhere in coastal Canton flying from RAAF Butterworth in Malaysia with a dog leg around Vietnam.