Forrest, while titanium is obviously heavier than aluminum, My understanding is that the added strength it provides allows more material to be removed in more places on the wheel, allowing the weight to come down and more creative cuts, which allows for better airflow characteristics. I don't think the ti wheels end up lighter than the aluminum, but not necessarily much heavier. Hey Joe, this charger is a real hoot and makes a ton of hp, and I have been driving it around on the street a bit, but with your rock crawling, big tires and heavy truck, you would likely want something that spools a bit earlier.
Craig