Interesting that you cant get Cyclura in there, Ive seen a few canadian Cyclura keepers but I suposse they are few and far between. The probs that your facing breeding your monitors are not impossible to overcome if you really wanted to. If I were you I would get at least one extra female to be shure. If they are not socialized you can only introduce them to each other if the female is ready to mate wich however can be hard to gess, would be great if you had a neutral territory area for them to meet. The egg laying chamber has to be temperature and humity controled, argus eggs are very unforgiving of less then optimal conditions like most large lizard eggs, turtle and snake breeders tend to be quite spoiled in comparison as thouse eggs are considerably more resilient. Keep your argus on the thin side, offer a variety of foods, uv ligth (not an absolute necessity but for shure stimulating mentaly and physiologically) and offer them envoiromental enrichment (new deco, lots of space, direct sun in the summer, harmless live prey like huge insects, etc). A stimulated and exercized lizard is a chilled one and less likely to become agressive at mating. With a bit of luck you will hatch some of those. Good luck as well with your mollucans.