You hit on most of the maintenance stuff. I would replace the fuel sock in the gas tank and maybe upgrade to a higher output alternator (stock is 80 amps). I'd also consider the following:
- Replace the PCV and associated hoses:
80 Series 1FZ PCV Valve Kit
- Replace the coolant (don't know how long it's been in there) and change the thermostat:
80 Series 1FZ Thermostat and Bypass O-Ring Kit. Also, replacing the radiator cap is probably a good idea.
- New/extra fusible link:
Fusible Link for 80 Series Land Cruiser
- Make sure that your water pump is in good shape.
- Go ahead and replace the vacuum lines. They're cheap:
OEM Vacuum Hose Kit- 3.5mm
Good Luck!