I apologize for the delay, had a few issues and the chat window froze up.
Make sure to get the timing belt replaced. AT this point, it's overdue for replacement, especially if the water pump is leaking. $750-800 is much more reasonable for the replacement. AT the same time I would recommend having the camshaft seals and the front crank seal replaced all at the same time. And honestly, even if the water pump isn't leaking, I would still recommend replacing it anyways. IT's a couple hundred bucks now, or in a year from now when it DOES start to leak, the timing belt and everything else would have to come back off and it would be about a $600 water pump at that point.
Labor rates vary from area to area, but we charge about $800 for a package deal with the t-belt, water pump, cam seals, crank seal, and serpentine belt, and do it all at once. We get a decent labor pay from it, the customer saves several hundred dollars from what it would cost individually, and everyone wins really.
The timing belt on this motor in particular is WAY more important than any other Toyota motor. Your motor is what's referred to as an interference engine. You can do a google search for more info, I won't go into great detail here, but if the timing belt breaks, the valves will hit pistons and do major damage. With any other Toyota motor that has a belt (instead of a chain) if the belt breaks, it quits running. REplace the belt and you're going again. This isn't the case with yours
Other than that, it's a GREAT truck. I regularly see them with 150k-200k miles (mine has about 110ish) with no issues. Somewhere between 100 and 150k miles the valve cover gaskets will start to leak, but other than that, if you stay on top of your general maintenance, you'll have a great truck to last you for many years to come. :)
If you have any other questions, please feel free to let me know. I'll be happy to help with anything I can. Have a great night :)