Winemaker,

I think either 1 or 3 for general use will be fine, and even if the springs do sag in the front, they are relatively cheap to replace again anyway.

I have found that most of the general aftermarket kits offer better ride than the factory standard springs and shocks.
I have never used the brands mentioned, and tend to use OME or Kings Springs and even after years of use, the sag on both of these brands has been minimal.


I guess it all comes down to adding up what extra weight your brother plans on adding to the vehicle ....
On the front, generally it will be max. bullbar, extra battery, and winch which probably adds around 120 - 130Kg

On the Rear, it depends on how much gear you want to throw in, steel rear bar, rear winch, extra spare wheel, long range fuel tanks, etc

You will find that depending on your static weight you will have your lift as intended, and the springs will then drop a bit when fully loaded, but not as much as the factory ones anyway
I.E Your 2 inch lift may drop 1 inch, but your factory springs would drop 1.5 inches anyway, so you will still end up will your 2 inch gain in body clearance.