Do you have to hike Mount Kabuye with Beyond the Gorillas Experience (BGE)? No (the trail is signposted).
Would I recommend to go with them? Definitely yes.
While the views are there for everyone, they are even more enjoyable combined with the great hospitality of Beyond the Gorillas Experience (be aware that you need to book in advance, the camp on top of the mountain is only serviced when clients are coming)
Consider spending the night up on the Moutain. BGE can accommodate you in tents.