Two sets of the R2 Extreme Dual should do for the 96"er (that's four 'lights' in all) and probably one Dual Extreme and one standalone R2 for the 75 gal IMO.
Look here for a pic of my 46g Euro Bowfront with the R2 Dual Extreme Moonlights http://www.monsterfishkeepers.com/forums/showthread.php?t=377663