Jack up kit versus dropping the forks.

[PieEater]

changing the length of the dog bones also changes the rate of compression of the rear shock. iirc it softens it up if you lengthen them.
so not only do you have to be concerned about ride height, but also spring rate and damping.
dropping the forks just changes the weight distribution and steering qualities.
there's a good reason where y firms like k tech, maxton are in business.

You are correct but maybe not in the way you think. A jack-up kit uses shorter dogbones firming up the rear which is highly beneficial if you are still running the weak OEM shock, if you are running a decent aftermarket shock you can adjust it to compensate if necessary.