Need a module or mega dungeon suggestion

[KrythePhreak]

Okay I have a group of players who want to get back into playing and a couple of newbies with no general idea of the rules just yet, which only leaves me to GM. The veteran players aren't keen on RPing and like to just focus on combat, and I'm not sure how the two newer players would play under social interaction in a RP setting which basically boils it down to a mega dungeon setting or something that will keep them on their toes to stop their characters from dying at every turn so I need some suggestions. Rappan Athuk was something that came to mind BUT I've still not sat down to read it so I'm not sure if there is RP elements or just a dungeon trudge to get the BBEG plus with two newbies, I'm not sure throwing them into one of the hardest mega dungeons to date is the best idea. Are there any other kinds of modules out there or dungeons that I could run for a newbie group thats semi friendly to ease them into the game and as they start to get the hang of it, ramp up in difficulty?

[Drogos]

Check out Thornkeep. It is a full dungeon crawl from Lvl 1 to ~9 with a large heaping of varried combats that range from fairly straight forward to likely deadly, and very few non-combat encounters. I've been playing through it with my PFS group and I find it fun and challenging.

[Grimmy]

Crucible of Freya->Tomb of Abysthor->Rappan Athuk.