Also, there's really no reason to spend $25k on a minivan. Especially if you do most of your commuting by bike. I bought a 2000 Sienna last year with 138,000 miles for $3,800. I did a 2000 mile trip with her this summer through the desert to Vegas, and the Grand Canyon, then back through the Rockies on I-70. We ran at 70mph all day without a single issue.
At 150,000 the valve covers are weeping a little bit of oil, so I'm going to change the gaskets this weekend ($60 in parts). Otherwise, I expect to get 200,000 out of this van.
If you're concerned about a vehicle this old, you could get a really nice van for about $10,000 that's much newer and has fewer miles. At that price, you could sell the Tundra and come out ahead money wise.
What exactly do you use the pickup for? Construction, landscaping? Towing more than 3,500lbs?