Harbor freight in Chantilly is open now.
Ali - just about any torque wrench that is rated for up to 100 ft/lbs will be adequate for what you are looking for. Like Haemish, I like my Craftsman because they'll replace it under warranty, it'll go up to 150 ft/lbs and I like the way it's set.
You say you know how to use one? Lots of people think they do but then, when they actually use it, they don't. When applying torque, it's got to be done is a smooth, steady effort, not the huge jerking motion and when the tool indicates the proper torque is reached (a loud click or on a dial indicator) STOP! Don't keep adding torque (you bought it and you are using it to set a preset amount of tension on the fastener. Personally, I always back off at the click and then, with a smooth and stead effort, I apply torque until it clicks again. I'm not adding any more torque, I'm just making sure it's good.
Also - NEVER loosen a torqued fastener with a torque wrench!