Nice looking practical AK RKM. How you like the Krebs peep?
Biggest perk of the sissy pad is what you're talking about (not recoil). I am able to position the stock higher on my shoulder because the bottom of the pad protrudes. It makes a big difference in cheek weld and overall comfort. The increased LOP is around an inch.
The peep sight is great. Much nicer to use than the standard sight.