I wouldn't buy a diesel on a $950 budget. I'll bet that truck needs about 10 quarts of oil on an oil change. Mine's not a Ford, but I have to change the oil every 2,500 miles. There is a warning sign on the visor to remind you. A diesel isn't forgiving to neglect. Let a hard-starting problem go and you can destroy $300 worth of batteries in a month. That's just the tip of the berg. You're much better off in a cheap little pick-up.
Turbo vs non-turbo doesn't matter too much if you aren't towing. An idi diesel FEELS pretty strong just driving around empty. Actually, it has better off-idle throttle response than a non-waste gated turbo. The problem is, when you head up the on-ramp onto the freeway, especially pulling a load, you'll quickly run out of pull. Also, the turbo makes the engine run much, much quieter and much, much cooler.