the Hyper Mini STE is 1/12 scale isn't it?
RC18T will handle it with upgraded diff gears. you can get a set of steel diffs that work great. you can also get the upgraded steel outdrives but I havnen't found them nescesary yet.
http://www.thetoyz.com/cart/thetoyz_...at_name=RC18B#
http://www.thetoyz.com/cart/thetoyz_...cat_name=RC18B
the cvd kit would be nice to have as well but I think the factory team kit might already have it.
http://www.thetoyz.com/cart/thetoyz_...cat_name=RC18B
Aside from these parts the rc18t should handle the power just fine.