A lot of people prefer the 4.0L w/5Speed AT to the new 3.5L w/6Speed AT electronically controlled. It has better torque, with maybe a one or two MPG loss.
However, I see two problems here that are deal breakers. First 2009 was a bad year for Tacomas. Second, per CarFax, there is no consistent documentation of regular oil changes.
I see where you are going, buster. With the collision, the price is not as bad.
I would keep looking. Once you find the right truck, you will like the way it is so boringly reliable and easy to maintain. You can climb underneath to change fluids, no jack stands required. ATF is a little tricky, as the temperature must be just right. Get a scan gauge. Motor oil, coolant and rear axle fluid are pieces of cake.
That's all I got. 900k total miles driven, two Tacoma 4 cylinder 2TR FEs. The durability is real. A well maintained Taco up to 100k miles at a decent price ought to be on your list. I remember you having a Subaru with some off roading involved, so the 4.0L would be a great choice for your needs IMV.