I installed the P-01 Omega kit myself. It actually looks like a very similar in effort as the P-07 Pro kit (one extra optional spring, I think).
Aside from re-installing the trigger spring - it's straightforward. [*DO* buy the proper metric pilot punchs; 2 & 3mm for my pistol].
DA pull went from 10.39 lb to 7.31 lb (3.08lb less)
SA pull was barely changed, from 3.40 lb to 3.26 lb (0.14lb less). I wouldn't want the SA pull any lighter.
The pull is smoother (perhaps due to polishing). It did feel slightly scratchy when new and before the kit.
The break is crisp (but was fine before the kit).
Reset is less, and has a positive feel, but I can't compare accurately.
Yes, the kit was great and worthwhile to me. Someone w/ more background might tell you, but I think if you replaced ~2 springs and polished the firing pin block-stop and trigger bar you'd have 95% of the gain. The two short-rest parts are the rest.
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Not to derail, but ....
Can anyone explain HOW to install the trigger spring ?
It looks like a similar spring on 75's, P-01 and P-07. Atorsion spring. Looks like
https://cdn1.cajungunworks.com/wp-content/uploads/2015/07/11094423/RP-TRS-1.jpgand YOW is it hard to install.