Hey, ok, let's use the full bed of Max Power as a reference, since we're in winter mode now. I would say that all 3 models are going to be more comfortable. As much as I like Max Power, it dies pretty quickly and feels firm at all times and even more after dying. With that in mind, I would recommend perhaps +1 lb in Sniper and M8, and +2 in Paradox so things won't feel too soft on you. Unsure if you meant 1.26 or 1.29 there with Paradox, but either way, same. That's using your baseline. Other option is to maintain your 53/50 if you're ok with things feeling a bit softer, because I think you'll like the new feel of both. Sniper will feel similar, by the way, but softer. You will also get similar power delivery.
My personal preference in the Pro Staff X would be 52/52 on Sniper and M8, and 53/53 using Paradox. But I'm at 5000 ft. At sea level I would drop things to about 49 to 50 in that frame, given the string pattern. Would go lower in an 18x20 comparable racquet. I just don't want to advise you to drop much more given your habit of stringing so high in the summer. It's hard to change something like that. But nice to see you going for it in full bed of poly during winter. Explore dropping a little more in time once you become a high 4.0 and are able to increase your racquet head speed enough to really control the extra launch.