Greetings!
We are going to Orlando in mid-May (need to be in Orlando by Sat, May 18th) from Boston, driving with my wife and 6-year old son. We have a fairly flexible schedule the week before and after and are looking for advice on scenic routes along the ways. I absolutely do not mind taking a detour of few hundred miles to avoid the nightmares of I-95 and associated traffic and get a nice scenic drive instead. Since we're driving with a small(ish) child, I'm in need of advice for few good stops at about 400-600 mile intervals, and a good place to stay overnight.

I would like to know if shore route is an option (maybe taking few ferries alongside the Carolinas or stopping at some ocean-side park or a beach), or instead should take it inland (like I-90 to I-81 to I-77 or I-26 to I-95), and where would be a good place to stop for few hours. Parks would work, historical landmarks, anything that is worth seeing and not too terribly boring for a 6-year old.

I came across few posts (namely by AZBuck) but it's a bit dated (2009), so I'm not sure if the suggestions given still hold true. If anyone has done this trip or similar, I would love to hear from you.
Thanks in advance!