Catalyzes the formation of CDP-2,3-bis-(O-geranylgeranyl)-sn-glycerol (CDP-archaeol) from 2,3-bis-(O-geranylgeranyl)-sn-glycerol 1-phosphate (DGGGP) and CTP. This reaction is the third ether-bond-formation step in the biosynthesis of archaeal membrane lipids. 2,3-bis-O-(geranylgeranyl)-sn-glycerol 1-phosphate + CTP + H(+) = CDP-2,3-bis-O-(geranylgeranyl)-sn-glycerol + diphosphate Membrane lipid metabolism; glycerophospholipid metabolism. Belongs to the CDP-archaeol synthase family.