Caliper upgrade???

I tend to do the whole brake system stem-to-stern
That is basically what ended up happening. when I got her last month, she stopped, but the pedal was a little squishy. I checked the fluid, and it was black so I replaced it. That prompted the MC to go bad (I'm assuming it was the newfound pressure in the system) so I replaced that. That prompted a failure in the rear passenger drum when the parking brake adjuster screw fell between the shoe and the drum (that was a fun sound) so I replaced the drums, shoes, Springs, and parking brake assembly. Now that the rear is taken care of it just doesn't feel like I'm getting any braking in the front and from time to time a thunk in the front driver side that sounds like the piston snapping into place). I haven't actually gotten in there, but I just figure for 150 bucks it's totally worth the cost to just replace the the calipers, pads, and rotors, and if I'm there I might as well spend an extra 20 to do the dust caps and bearings.
I've seen what to do for the outer bearings, but what about the inner bearings? or is it all part of the same assembly?

I'm surprised to hear about the kits. I've been reading good things about the PST kits. Take a look, I'd like to see what you think

Performance Suspension Technology

The big project is going to be adding air conditioning. I'm in the socal desert, and summer sees more days above 100 than below. I'm talking to the guys at classic auto right now.