Chris, when you read up about the Dart's time in VietNam,,,,,they should have talked about the Dart's intended mission, and the fact that it was not needed all that long to defend the air base,,,,,,the Thuds and Phantoooms could do that just fine
so, when the 102's went home, there was no need for the 106's,,,,and the Puzzle Palace Pencil Pushers were constantly afraid that our fleet of Voodoos, Darts, and Daggers were going to have to fend off the Bears if we "did too well in the bush"
Double duty for the Thuds and Phantoooms made more sense,,,,,send most out for air to mud, some as MigCap,,,,some on instant scramble alert (or whatever the USAF called their Hot Pad guys)
you picked a great era to model, there,,,,,,,,,,there is a constant variety of weapons and aircraft,,,multiple US services to do,,,,,and many foreign services in the bargain,,,,,,you could build for years just trying to get "one of each" done
Rex