Understanding the over all general codes these are (esp 1884) I have started fixing / replacing potiential causes accordingly. However, something still isn't right.

Overall issue- rough idle / lull in idle when coming to a stop sign almost like its bogging down / riding the line of stalling / shutting off.

Backstory- I live on Oahu, HI and most families, when coming here get a cheap "island beater" to get through day to day life. With this "island beater" mentality comes genuine overall neglect. I bought my 2000 Land Rover Disco 2 (V8) about 2 years ago and have since been slowly bringing some life back into it to get her back to her prime. Throughout the past 2 years it had some coolant system issues to include a water pump failure which has since been replaced. The latest coolant issues started arising which showed solid indication that the head gaskets had finally hit their lifespan. About 2 weeks ago, I replaced the head gaskets, water pump, thermostat, ect. Also, cleaned and repaired issues that were identified while in the process of the job. Got done, all is well and the disco is running mechanically sound with the exception of what I'm assuming is a sensor issues that is creating a rough idle when at lower RPMs. I've cleaned the MAF sensor as well as ordered another in case of it also reaching its lifespan. When driving, the vehicle seems to be running with zero issues and will also NOT pop a CEL. When coming to a stop, it starts to run a little rough with some identifiable "rumbling" / "slight choking" but will start running just fine again once in motion. Zero throttle delays. Some slight throttle / idle "sticking" but with a little rev of the engine, it will return to normal idle. When parked and idling, it will idle fine for a short period but slowly degrade into a rough misfiring type idle that most engines would have if a fuel/air sensor were to be removed /unplugged while idling.

Over all, this thing is really starting to grind my gears a bit. From what i am reading, possible culprits could be: MAF sensor, IACV, crankshaft position sensor. IACV and MAF sensor have been cleaned with the appropriate electronic connection cleaner / mass airflow sensor cleaner. I have not done anything yet with the crankshaft position sensor, however, it's replacement is next on the chopping block. Before I do, I wanted to see if anyone experienced the same issues and could verify that I am traveling towards a solution to the issue and not wasting my time looking in the wrong direction.

Any help would be greatly appreciated