I'm curious... Why is he talking you out of it?
In a nutshell, he seems to think that the higher the lift the more stress you put on the other supporting components (ball joints etc) because of the drastic changes in suspension geometry from the original factory specs.
There may be some merit to what he's saying - maybe not because I know the majority of the supporting suspension components will be upgraded as well.
My concern right now is I am already 3 - 3 1/4 inches above stock ride height and as it is between my lift and larger tires.
I have to be careful about where I drive and what I try to drive under as it is.
Do I really want to spend another $3,000 - $3,500 (between parts & labor) just to raise my Commander another inch or inch and a half?
And it will actually cost me even more than that because I would have to get new rims and tires also, which would probably be another $2,000 - $2,500.00. Now you are talking about $6,000.00
How will it affect the ride? Better or worse? I'm guessing it's probably going to be a stiffer, rougher ride - but I don't really know.
I don't think the expense justifies the return.
Honestly after thinking about all of that extra expense, I'm leaning towards not doing it and more towards a custom front bumper with a winch.