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Hat man,
Your new ones are 753 and your old ones were 786 so that is 4.4% difference. The tires look slightly aggressive but not too bad, but it is possible that tread pattern may hurt you a bit on rolling resistance. It is a hassle, but I actually keep two sets of wheels and tires for my Tacoma, a set of pavement pounders and a set of off-roaders. If you do a significant amount of street driving and only occasionally need the aggressive tread pattern, it is a good way to save some fuel on the road and save the wear on your aggressive tires.
Your wheel weight will mainly hurt you on acceleration and deceleration, more of an issue in stop and go. The better gearing/final drive ratio will mainly help you at steady state, so that is more of a benefit for highway driving. The taller tire will also lift the truck slightly, giving you increased ground clearance but hurting your aerodynamics slightly. Your exact commute and driving style will determine the rest, but I would expect to see at least a small gain.
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