That's good to hear about the writing and directing, but if all the acting sucked then there is no way the movie could be a 7 out of 10. Especially if the ending was only so-so on topp of that. I'll still see it and give my 2 cents, probably at some point this weekend if I can download a decent copy.
And Wahlberg a shitty actor, granted I haven't seen this recent film, but The Departed, Invincible, Boogie Nights, sorry but I think your over-looking the rest of his career, Simply. Granted I do like him as an actor, but his performances in those movies were all solid.