I would tighten the keys until it’s about a .5” higher in the front as everything will settle down a bit after driving it some.
Also when making adjustments try to keep the two torsion key bolts somewhat even with one another and move it in and out the driveway before you measure to make sure everything’s settled and at the height you want. Once you get it set how you like you can go ahead and get the alignment but if you adjust the torsion keys again afterwards you may need to go back for another alignment depending on how much you lift or lower it.
The +.5” or 1” rake up front will and should even out after some road driving and once settled won’t be that noticeable more then likely
As for the rear I wouldn’t worry about the helper bags shit I pulled around 15,000lbs (dump trailer and 3-4 pallets of sod) maybe less with my Tahoe when she was stock and she took it. Very slowly but she hauled it 3-4 hr straight!
But she was sitting on the tire just about this was before I upgraded the rear coil springs
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