well personally, i went with different shocks than the rubicons, but thats all personal preference. the kit looks like a good deal, and you will probably save some $$$. just sounds like you are sold on that particular lift. if your buddy absolutely needs the rear lift springs instead of the add-a-leafs then i would say order it! if he is cool with just the add-a-leafs, then he could do the lift and shocks here for a similar price. i'm kind of partial to doing the local thing, just cause when my buddy ordered something from the US, we ended up buying more parts at modern anyways.... forgot bushings for the leaf springs, and instead of waiting another three weeks for the replacements, just bought em. would suck to sit with 'most' of your lift waiting to go on....
on a side note, if you do order it, i'm curious how much it would cost with exchange, taxes etc.