High mileage maintenance recommendations

I have owned an 02 LS430 for three years now. I’ve probably put around 20,000 miles on it (sitting at 176,000 now).

I’m not super handy with cars, so I’m wondering what kinds of maintenance/repairs I should keep an eye out for as I approach 200,000+ miles.

It runs and drives great, but this past week I had some engine misfiring, and had to have spark plugs, an ignition coil, valve cover gasket and purge valve replaced. I’m also planning to have the transmission serviced around my next oil change.

It seems like the most common problem for my car is old gaskets/hoses/rubber pieces that have dried out, but I also had to do a pretty costly read wheel hub repair last year.

I want to keep this car running for as long as I can, so from your experience, what kinds of things should I be looking out for/keeping up with regularly?