i just managed my 2" kit on my own.
Before you start i would suggest gettign under each wheel arch with the jetwash and getting everythign clean.
A good dose of plus gas on all nuts and bolts.
Might also be best to get hold of some decent spring compressors as well.
To make it easy for doing on my own, i used an old scissor type jack to push the axle down from the chassis, much easier thn tryign to hold it down with a 2x4.
when you put everythign back gove all the bolts a good smearing in either copper slip or waxoil etc. you'll curseit the day you try to dismantle if you don't