Expect the actual tongue weight (fully loaded for camping) to be more like +/_ 800 lbs based on the brochure info. The WDH will add another roughly 100 lbs. You'll have around 900 lbs of payload that should be deducted from the payload capacity sticker on your door pillar sticker to ensure you aren't overloaded.
The ball on the truck is usually initially set at 1" higher than the TT's coupler (with level trailer) to allow for settling/squat in the rear of the TV.
You'll want to measure the before and after front fend height to get the proper amount of weight transferred back onto the steer axle. You want to end up with the spring bars approx. level when the proper amount of weight is transferred up front.
Won't take long to do an initial setup to get close to what it needs to be. Doesn't have to be exact and you can tweak it at afterwards when home and have the trailer loaded up. You really need to have adequate weight transferred back onto the steer axle for safety. +/- 900 lbs is a lot for a 1/2 ton.