Munchkin Deluxe with 7 players

[MightyMunch]

Hello all, I've been looking through the forums and haven't been able to find a definitive answer to my only remaining question. I'm having 7 people (including myself) over to play Munchkin Deluxe for the first time. From what I've read here I know that the game can expand from the 6 players stated on the box to 7, what I don't know is if the deluxe box has enough cards for that, or if I will need to buy any extra cards? Please let me know the answer to that, and if I will need any additional cards, I'd appreciate any suggestions on which packs are best.

Thanks