Just watch Star Wars and ESB then go in and watch TFA imagining that it was the third film and it refers to grand events that were not seen in the cinema and see if that make the new film an interesting “episode 3”.
Then how did Han get unfrozen and meet Finn and Rey?
The carbon freezing unit broke down on a hot day. The rest writes itself.
I’d rather watch ROTJ though. The DSII battle was quite impressive.