Should I be concerned about the surface rust

My 3rd gen has been a California car all its life but did have an owner who lived in ventura (presumably near the ocean) there appears to be some surface rust, should I be concerned? What's the best way to take care of it, I was thinking of take a wire wheel and rustoleum rust reformer. Rest of the truck is in amazing condition

 

Wow what a trophy. I don’t see any rust, but any preventive maintenance will help in the future. Like radiator, upper coolant hose? I get a hundred thousand miles out of a set of plugs? Bleed the brakes: air compressor/pressure vacuum pump

 

Isn't it surface rust on the welds (by the sway bar)? Whats funny is i just changed the plugs the other day (has 210,000 miles) and I'm pretty sure they were never changed because half were denso and half were ngks, 2 of the plugs were really loose so I'm surprised it wasn't misfiring. I did the plugs and wires. I have an oem radiator with hoses and a transmission cooler im going to swap hopefully by end of the month when I have time. I just got an old man emu setup with rear coils from wheelers as well

 

I had to swap out my rear bumper. That usually rusts out first.

 

So I took undercoating rust preventer and coated the back side of the new/used bumper. I wouldn’t forget that area. Especially the corner mounts.

 

And looks like a leak prob valve cover gaskets and the cover grommets.

 

Off topic “but” I’m trying to figure out the difference in a “Limited” and a “SR5 Limited”. Is yours a 1996?

 

The owners group claims it’s just a “Limited” and it has a PX Metallic paint package.

 

would not be too overtly concerned..get underneath...clean it..and then wire brush..and then prime/repaint as needed...once a week, go underneath..and monitor....

 

If it were me, I would get a solid metal, 3 core, radiator, and install a separate transmission cooling radiator. CSF makes superb radiators. Prevent the whole "milkshake" possibility. Not to mention the all metal radiators last a lot longer than the plastic tank ones do.
I put all metal 3 cores in both my 87's, some 30+ years ago, and the one in the pickup is still going strong 30 years later. The one in the 4Runner blew the top tank off, but it lasted about 28 or 29 years. I really feel I got my money's worth out of both of them.
Come the day, I'm getting one for my 99 Runner. It's just a matter of time, now...
MUAHAHAH...
<ahem> Sorry. Got carried away there.

I usually recommend OEM replacement parts, but the radiator is one thing I make a strong exception for. Just my personal opinion, for what little it's worth.
BTW: Make sure to use the Toyota Red coolant. It made for these trucks, and helps prevent the differential metal corrosion they're prone to. The generic green coolant doesn't at all.

Good luck!
Pat☺