Suspension component update for ARB bumper install w/o winch

I have read every thread relating to this topic that I can. I apologize for asking some of the same questions again, but I'd like the most up-to-date information available.

Here's what I have:

Stock(ish) 2015 TRD Sport DCLB: I say stock-ish because I bought the truck CPO, meaning it may have some aftermarket components. I know it has LED/HID lights all around and the wheels are from a 3rd gen TRD. Safe to assume that there may be other modifications.
Mall crawler: The closest I'll get to offroading is the occasional unpaved/unmaintained driveway. This thing is my daily driver, not something I plan on beating up.

Here's what I want:

Fire-and-forget: Whatever I do, I don't want to shorten the life expectancy of the truck or its components. I'd rather have long-lasting parts with *okay* performance than super high performance parts that need to be replaced every 5 (or 10... or 20) years. I plan on driving this truck for the next 25 years.
M1A1 MBT (Main Battle Tacoma): I'd like to up-armor the hell out of this truck, just to negate any concerns I have about negligent drivers. Gotta protect my investment.
Lift is not a concern: Upgrading the suspension is done solely to support the deer vaporizer mounted on the front. If the front ends up level, great. I don't want to go any further than that.

Here's what I've learned:

OME suspension upgrade kit: a good choice, especially considering ARB and OME are the same company (or closely related), make well thought-out products, and should have no interoperability issues.
OME suspension kit selection: unless I want a rough ride, it looks like the stock/light load kit with 885 springs is my best option.
UCAs: I don't know how much lift I can expect with the OME kit and 885s on the front end. If it's any lift - at all - I will be buying new UCAs as a preventive measure. SPC seems to be a favorite.
1/4in trim spacer: Needed when installing aftermarket suspensions without driver/passenger side specific springs to eliminate "Taco lean."
Carrier drop kit: I think the OME kit comes with one of these. It sounds important, but I have no idea what it does. Any input would be appreciated.
ECGS bushing, one-piece driveshaft, rear axle shims: I have no idea what these are, nor do I know if they'll be needed.
AAL/leaf pack: I have no idea what the OME kit comes with for rear-end upgrades, nor do I know if I want to install them. I will be adding a wraparound rear plate bumper with swing-out tire carrier at some point.
Upgraded bump stops: I dunno... the internet said they might be a good idea?

I won't be pursuing any of these modifications until the truck is paid off, which gives me 4 years to research components and figure out what will do the job best. Since I have 4 years, I have a looong time to save, so assume that my budget is unlimited. I'd rather buy once cry once than cheap out and end up breaking stuff.

I don't want to be the guy that asks to be spoon-fed information, but trucks are an entirely unfamiliar subject. Any feedback would be appreciated.

Edited to add: sources for information I found.
https://www.tacomaworld.com/threads/arb-bumper-question.380993/
https://www.tacomaworld.com/threads...spension-update-to-go-with-arb-bumper.652353/
https://www.tacomaworld.com/threads/arb-bumper-and-stock-suspension.189952/
https://www.tacomaworld.com/threads/new-taco-owner-with-small-lift-qs.532177/#post-17059359
https://www.tacomaworld.com/threads/ome-suspension-ordered-what-am-i-missing.502844/
https://www.tacomaworld.com/threads/upper-control-arms-yes-or-no.534324/
https://www.tacomaworld.com/threads/tacoma-ome-kit-heavy-vs-regular.534401/