Not really I built all this over time. For years my parents went down to Florida when I grew up in New Jersey, so I got to see it all. Well mostly. I remember when the Kenly to Gold Rock Segment was not completed and you had to use US 301, however I did not realize it was in 78 when that opened. Although we did vacation in Florida in 1978 at Jekyl Island, GA one year after 8th Grade Graduation, and now that its mentioned it might of been that year it opened.
I do know for sure that the Fayetteville Bypass was completed either in 1981 or 1982. The Georgia segment by Brunswick was around the same time as that was the last segment of I-95 in the Peach State to finally open to traffic. So it was not until my HS Graduation trip when it was all completed from Delaware to Florida that I first saw it. I did not go to Florida in 1982 for sure as we just went to Williamsburg then as my dad was not ahead financially that year, so we went closer to home.
So yes, I guess my frequent trips to Florida were in the early 80's and all the 70's.