study books

[AKsPRO]

Guys can you advice me some books to order at Amazon? I'm going to play Stud8 and Omaha8. From 1-2$ to 10-20$ PP (just want to get all this books by only order). Is "High-Low-Split Poker For Anvanced Players" by Ray Zee + this forum enough?
Do I need "Winning Omaha/8 Poker" by Mark Tenner and Lou Krieger? Or "How to Win at Omaha High-Low Poker"
by Mike Cappelletti? What about "Championship Omaha"
by T. J. Cloutier and Tom McEvoy? Any other book I REALLY need?
Thanks for help