I'd be generally very wary of using an aftermarket trigger in a self-defense pistol of unique design, such as the LCP Max. Even the better quality ones are not tested like the factory OEM is. I've seen numerous aftermarket triggers and fire control parts in various firearms fail unexpectedly. On range and target guns they are OK, if they break you merely get it fixed. If it fails in a defensive pistol when you need it, the result may not be so convenient.
LCP Max is a very lightweight and light-duty pistol. With any full-powered .380 load, some trigger slap is going to be inevitable. This is the compromise you get with the design, of which the primary objective is a small, lightweight pistol for defense. You pay the price with recoil. It's not much of an extended "shooter".
My trigger doesn't bite, but the pistol itself is definitely snappy in recoil with stout loads. I have safely loaded a 90 grain JHP to 1020 fps in the pistol; some of the Buffalo Bore ammo gets 1100 fps with the same weight bullet. While possible, I found it too much in the pistol. This little gun I much prefer with 950 fps 90 grain loads, or 95 grain FMJ @ 900 fps. As you said, changing your trigger finger position may alleviate the problem somewhat.
Mine went back after 400 rounds because the magazines started dropping out when firing. Ruger replaced the spring and mag catch. Feels perhaps marginally stiffer now, and the mag drop problem has not recurred. The design of the catch and the surrounding area of the frame could have been better designed - there's no "fence" around the catch, and under recoil it's impossible to hold the pistol without the shooting hand middle finger coming very close to the catch.
I also noted that the pistol shot noticeably low at 15 yards with most loads. Ruger advised that their accuracy standard for the LCP Max is a 2" group at 7 yards. No mention of how many shot in that "group", maybe 2-3 rounds? No mention of POI standard either, I guess that is not a consideration for them. What is interesting is that Ruger's accuracy standard for this pistol works out to 7"+ at 25 yards. Mine does better than that - about 6" at 25 yards - but as I said it's not much of a shooter. The good sights on the pistol lead to you believe it would shoot better than it does.
I bought the LCP Max thinking it could replace both my S&W Bodyguard 380 and Glock 42 - a small gun with higher capacity. Both those other guns are far more accurate: about 4" at 25 yards, and easily keep all rounds on a silhouette target at 50 yards. LCP Max is not reliable at 50 yards, even in slow fire. It's also very light-duty: has a very thin barrel wall, the frame is peening after 500 rounds, and my slide was oozing rust after 3 weeks. However, for what it is - comfortable lightweight close-in pistol - it's adequate. I'm going to try and find more accurate loads that also shoot to POA, and then I may like it better.