If you wanted to have backup sights that can see through these rings they would have to be extremely low and also may not even work because of your objective lens. I would just recommend using offest iron sights like the FAB Defense Front and Rear Set of Offset Flip-Up Sights, found by using the link below:
https://www.opticsplanet.com/fab-defense-front-and-rear-set-of-offset-flip-up-sights-right-hand.html
Yes, these Trijicon Heavy Duty Extra High Steel Rings will provide a height from the surface to optical axis of 1.711" which is enough to accommodate a 56mm objective lens.
The Trijicon Heavy Duty Extra High Steel Rings for 34mm Rifle Scopes requires 18 inch pounds for the caps, and 50 inch pounds for the bolts that mount to your picatinny rail system.
Yes, that would work perfectly.
You can pair these rings with a picatinny rail. Here's a link to the rail.
https://www.opticsplanet.com/egw-remington-700-picatinny-rail-tactical-scope-mount.html?_iv_gun-make=remington&_iv_gun-model=remington-model-700&_iv_action-length=long-action
You would be better off using MPN: AC22003 for this scope on either of those rifles. Please email us at techsales@opticsplanet.com if you would like a better recommendation.