Blazer -
Re adding your own lift kit - if you've got the tools, go for it! The lift is not a complex mechanism. In fact there is no reason I know of to limit your lift to 2" if you feel there is need for more. Your signature says you have done a lot of vehicle lifting before, so you are knowledgable about the advantages (ground clearance) as well as the drawbacks (higher CG).
In Australia, my wife and I saw a camping trailer that had to have been lifted 18", pulled by a vehicle that was lifted by more or less the same amount. The combo was clearly intended for use in the true Outback. With the center of gravity that high, I wouldn't want to take any high-speed mountain curves with it - but then, Oz doesn't have much in the way of mountains.
So if you know your goals and intents, there is no reason I know of not to do it.
Bill
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