I should mention, I have tried the globe front in the past for hunting and just do not like it; it can obscure too much of the critter, or make it hard to find, and in certain light, especially the woods, it can be hard to even find the front sight, much less the critter.
Also, for hunting with a rear peep, you are best served by shooting with both eyes open, as long as your lead eye is the one looking through the sights.
FWIW, I dont think the ladder (even though I like the one on the old '98Krag, will be of much use on 'close up bear'; and if you try to use the open sight part of it that close to your eye you likely wont be able to get any focus on the notch. If you want to find out how it would work for you, and have another open sight in the bins just set it up there with a little stickum and try to see on down to the front.