I just picked up a Fantasy Slannesh Lord for use in my CSM as a Chaos Lord w/ Daemonic Steed, and I'm wondering what kind of base to attach. The model comes with a 50mm square, but most cavalry come on that 25x60 hot dog bun base if I recall? Should I go with the base as supplied, even though it's Fantasy, or should I rig up a different base to match the type?