NEGC will be able to help you pick out the right ramp and sight height for your rig. It's not a difficult calculation if you know your divergence for LOS (POA) vs. boreline, all you have to do is factor in the taper of the barrel and barrel length against the height of the rear sight vs. the centerline of the bore, plus correction for the drop of your load at the range you'll be shooting. Brownells has a calculator on their site that'll do all of that for you also.

If you're hunting elk in thick cover I'd go with a larger bead and as fiber-optic. A round hood with a peep sight can start to mimic the sight picture of a peep and globe sight, which is an advantage. It'll rob you of a bit of illumination on your fiber optic unless it's "vented". I recommend the larger dot and fiber optic because it'll offer you the best low light visibility, which will be more important than precision in short range, thick timber hunting. The NEGC peep sights come with multiple aperture diameters to allow you to match your peep to your front sight, hood, and lighting conditions.

NEGC offers a multi-bead front sight (or at least used to) that had a flip style bead that would reveal a smaller bead underneath. Might not be a bad option for you. Better visibility in low light, but better precision available for longer range shots.