The blackened life oracle sounds great - healing and blasting at the same time, with some room for buffs and utility spells. Another strong option would be some kind of combat maneuver based build - a Maneuver Master Monk would be able to leave your enemies blind and tripped so your teammates could stomp them for massive damage, and would also take advantage of those great stats.
Gagmor, Holy Dwarven Monk of Torag
Don't make fun of his height or you might find your knees knocked out from under you!
Con 17 (15+2)
Wis 19 (17+2)
Cha 9 (11-2)
1 Combat Reflexes
1M Improved Unarmed Strike
1M Improved Trip
2M Improved Dirty Trick
3 Vicious Stomp
Sample full attack at level 4: swift action use ki to gain an extra attack; +8 Dirty Trick (blind foe); +8 Trip (if foe is blind, they have -2 and no Dex to CMD), provoking AoO if succesful; use AoO to stomp opponent on the ground; use bonus attack to stomp opponent again.
And then your friends can come up and stomp on them, with +4s since the foe is prone. And then when the foe stands up, it provokes from you and your friends. And once you get Greater Trip at 6th, the initial trip provokes attacks from all your friends, and provokes attacks from you TWICE.
See if you can get one of your friends to make a PC with a reach weapon and access to Enlarge Person. Fun times ensue. ;)