Drive. It's around a 4 hour drive based on distance without traffic considerations.
Fly. Fly from Logan to Newark (?) and rent a car or Uber to Raritan. This option sucks IMO. It's an hour to Logan from my house (with traffic, ~30 min without, but there is never no traffic), then say you get there an hour before the flight, between taxiing and landing/deplaning it's an hour to 90 min, the the hassle of airports, etc. before even commuting from Newark to Raritan. In the end you have the stress of air travel combined with no time savings. lose/lose.
Train. Better than flying, Acela to Newark is 5 stops for me, plus it's convenient (can work on train, etc.), but what do I do at Newark Penn station, rent a car and drive to Raritan? It's what? 40 min or so? Only advantage over driving is I don't need to worry about traffic as much, and I can work on the train, but getting in and out of Penn Station has been a shit show lately.
I guess what I'm trying to figure out is there a better option than driving. Seems like train might be the only consideration.