what needs done after sitting garaged 5 years

plugs and wires?

As previously posted, the plugs are new, although the wires are not. I guess I can be more specific. I know I need to change the oil, and most likely the brake fluid, but do I need to go as far as transfer case, power steering, coolant etc?

Tank was drained before or after being parked? If it was empty, there is probably a lot of condensation in the gas tank. Fill 'er up and add some alcohol based water remover. Inspect tires very carefully. If I was in your position I would but new tires regardless of whet they look like. 5 years is really not enough time to really ruin a tire, unless it was in the sun, if it was (in the sunlight) new tires for sure. I see no reason to change brake fluid, power steering or transfer case oil