Essentially. It's shockingly similar in some ways - even repetitive. I think, though, that this is what SW fans yearned for after the prequels. The movie pandered to the fans. It's good and bad.

I was expecting a fully functional Jedi Temple with several apprentices. It's ANH all over again.

I think there is a great backstory here. I wonder perhaps if Ren wasn't sent on some missions for Luke and became disillusioned with the general anarchy in the galaxy after the fall of the Empire? The collapse of the Empire may have somehow led to galaxy wide poverty. He probably complained about this to Luke and considering Jedi rarely give good answers to their desperate students, he became disillusioned with them. He perhaps even saw his parents as anarchists and yearned for order. Snoke may have played him on this.

I'm pretty sure she has Skywalker genes. It's regrettable, but inevitable.

The other question is how Snoke managed to gain resources that rivaled the original empire. To turn a planet into a weapon couldn't have been cheap, and he's clearly got the money to form vast armies and match the Rebels/Senate in might.

I thought this was kind of obvious. This is what I would do if I was Luke. I can't imagine it's healthy for the galaxy to have only one remaining Jedi and they're useful to have around.

Han said he felt guilty, and I suppose he blames himself for allowing Ren to fall, much like Obi-Wan felt with Vader. I also get the feeling that Ren and friends killed everyone at the Temple. Luke may be trying to start again in secret, to evade the dark side like Yoda did when he went to Dagobah. By training Rey there he can at least hope to match the FO as a team of well trained Jedis. Luke is also looking for the first Jedi Temple... not sure what he wants there, but perhaps to commune with former Masters and gain some wisdom.