You can still buy Pitroad sets of Viet Nam era jets for under twenty dollats at PlazaJapan. These are not only good quality representations but also allow for a decent number of aircraft per set. There are a couple of sets to address your needs that inclue SKyhawks, Skyraiders, Skywarriors, Phantom 2s, Vigilantes, Intruders, etc. As well as decals appropriate to Nimitz and other cold war era carriers.