GU Suspension

Well after studying several sources of information I was satisfied with the information I had read and the decision I had reached - it seemed so simple, HD King Springs and adjustable long travel Koni shocks. I then went to start collecting prices - now this is when it starts to get confusing. I had the part numbers for the springs so this part was very easy although I was amazed at the difference in prices between one distributor and another. I was advised to get a swaybar extension kit by one supplier although each supplier I contacted after this said "just remove the rear swaybar mate" including the more popular 4wd stores when I asked for the price of the extension kit. ARB advised the caster correction bushes would be neccessary with a 2" lift @ $260:00 although everyone else disagreed with this - I wasn't suprised after what I have read about ARB on this forum. Then the corker - I contacted the Koni importers for a price on there shockies, where I was advised that Koni's would not be the best for my application, eg lots of weight and lots of 4wd'ing - when I mentioned removing the rear sway bar his attitude changed considerably as if I had committed some huge evil. He advised that I look into the TJM suspension packages or the OEM packs and he could not help me any further except to make a point of stating his qualifications and the fact that I could not have possibly been advised to remove my swaybars.
I have started off knowing very little but I am slowly being flooded with opinions - where can I get the correct information first time as I am unable to sort the opinion from the fact - I just want the facts - from this I can create my own opinion. There is far too much contradiction in the information available. I have just purchased a new Nissan and really want to get it right first time using everyone else's experience, I cannot afford to experiment, this is too expensive as it is.

Rokkitt