Personally, I reckon that the leviathan is a bit too much of a one-shot purchase for a small supplier to stock, especially because stores like Wayland have an automatic 10% discount on everything.
I would suggest that you stick to the troops and small accessories for now and see how it goes. If you get a lot of people buying the Dreamforge stuff from you then maybe you could canvass them for their opinions at a later date.
Just my thoughts (and I am not a shop owner).