Have you read Kip Thorne's "The Science of Interstellar" ?
I'm afraid, it's not possible to simulate Gargantua in the Orbiter, even roughly.
Usefull links:
http://interstellarfilm.wikia.com/wiki/Gargantua
By calculations of Kip Thorne, Gargantua is about 100 million solar masses, placing it firmly as a supermassive black hole. Furthermore, it is an edge case in that it's somehow spun up to maximum minus 0.00000000000001 of the maximum, dragging space around it as it did so. Several of the visual effects were toned down severely from what it would actually look like; the event horizon would be warped and red and blue shifted. Miller's planet would have been under the level of the accretion disk and the event horizon would have covered 40% of the visible sky. By those same calculations, orbital transfers to Miller's would likely require slingshot maneuvers around intermediate mass black holes at both the start of maneuvers and at the end, as the energy requirements seemingly preclude other methods of getting the required energy. Partially alluded to in movie by the short reference to a neutron star being useful for slingshot maneuvers.
http://interstellarfilm.wikia.com/wiki/Miller_(planet)
One of the main reasons Planet Miller isn't pulled into the black hole in spite of its proximity is that Kip Thorne made sure that Gargantua was a rapidly spinning black hole—and it turns out that the physics of rotating black holes differ from non-rotating ones. The sheer speed of Gargantua's rotation means there is a single stable orbit just outside of Gargantua's event horizon that is very stable. It was also stated, Miller's Planet to outside observers orbits Gargantua every 1.7 hours. On Miller's Planet, that means the planet orbits ten times a second around Gargantua, which is normally faster than the speed of light. But since the spin from Gargantua caused space to whirl around it similar to wind, Miller's Planet does not travel faster than light relative to its space as the laws of physics say you cannot travel faster than light relative to space, but space itself is not bound by the speed limit. As such, faster than light travel is possible by bending and twisting space. However, Gargantua would have to fill half the sky in order for it to be so close.
The time dilation on Miller due to the gravitational forces of Gargantua would be tantamount to the planet moving at roughly 99.99999998% the speed of light.
http://interstellarfilm.wikia.com/wiki/Ice_Planet
In Kip Thorne's book, The Science of Interstellar, he mentions that planet Mann probably has a highly elliptical orbit around Gargantua. He surmised this from the sublimating ice clouds, which, after a while, would totally evaporate. Therefore, the clouds must freeze and evaporate repeatedly, which Thorne believed could be caused by the eccentricity of Mann's orbit. The planet's gravity is 80% of Earth's gravity.
