[KLS]

CREATE TABLE `raid_members` (
  `raidid` int(4) NOT NULL,
  `charid` int(4) NOT NULL,
  `groupid` int(4) NOT NULL,
  `_class` int(4) NOT NULL,
  `level` int(4) NOT NULL,
  `name` varchar(64) NOT NULL,
  `isgroupleader` tinyint(1) NOT NULL,
  `israidleader` tinyint(1) NOT NULL,
  `islooter` tinyint(1) NOT NULL,  
  PRIMARY KEY (`raidid`, `charid`)
)
ENGINE = InnoDB;

CREATE TABLE `raid_details` (
  `raidid` int(4) NOT NULL,
  `loottype` int(4) NOT NULL,
  `locked` tinyint(1) NOT NULL,    
  PRIMARY KEY (`raidid`)
)
ENGINE = InnoDB;

Is what I actually ended up going with.
Got basic creation and inviting ungrouped characters working, so much more to do.