I'm taking a break from installing a new floor in my basement...so I'll give you a more detailed answer later when I'm relaxing this evening (hopefully in my basement with a new floor watching a movie...)
But consider that once you fall, it is a DC 10 check to stop yourself from falling further since you are on a slope. You could leap, kick it with a shove attack with no disadvantage for trying to hold on and then catch yourself....you might take 1d6 bludgeoning (halved for rage). If you fail, it's another check for every 10' as you accelerate...DC 11, 13, 16, 20, 25, etc with another 1d6 per 10' that you fall...Something to think about.