The Misfit will fit below the Disturbed without any problems. From what I know about it, it should be more similar to the Tropical Heat Hybrid you have, and similar to other balls such as the Columbia Freeze. Big difference is that it will be more angular. Typically the DV8 line has had the Misfit as their entry level balls, and then slotted their Marauder/Diva line above it as their mids.
Here is a video review of the Blue/Orange Misfit:
https://www.youtube.com/watch?v=40BR6141yxsWhat you can do potentially is drill it stronger and/or change the surface to be a more of a true step down from the Disturbed.
Another option since the Tropical Heat Hybrid balls were not too far off from the Hy-Road, is to potentially plug/redrill that with a stronger layout and then slot the Misfit below it. In either case, that's where working with your pro shop will be the best source of advice.