shocks and suspension

hi forum hope you can advise me, have 1999 petrol gas land cruiser cruiser is stock standard except for running boards and rear wheel on the back,want to put 4coils springs and new shocks.At this time no camp trailer yet but soon will have one ,off road,where to go arb or tjm or pedders all have diffrent ideas pedders say put foam filled shockers and arb say put there system wich is old mam emu gear there shocks are nitrocharger shocks , the load i will carry will be aprox 1000-12000kg when loaded ,most of the time the tojo will be a town 4x4 except once a year for 4weeks in my holidays thanks REGARDS STAN