2014 v6 Impala timing chains questions

I have a 10th gen. Impala with the 3.6 LFX engine. It has about 186k miles. I have no problems currently with the car. It runs great, no codes, does everything I ask it to do. My question is whether it's just time to do the timing chains and water pump job before I get those dreaded codes and driveability issues that so many have talked about with these cars. Im also wondering how difficult this job is to do myself. I have done lots of timing belts over the years and many other repairs, but from what I've heard this one is a bit of a bear to do in the driveway. This is our car that we take on the road and stuff if we have to go out of town, so I do need it to continue to be reliable. I bought the car with 142k miles on it and have changed the oil at a bit over 4k miles since then. The previous owner seemed quite meticulous as well.

Belts need service but not your chains. Keep good oil changes is your longevity pill.

Great thank you! I will keep that up.