The toughest part is when bolts break, and fitting coils in. Advance will rent spring compressors. A budget boost can be done in about 2 hours. A full lift more like 6 hours.
Soak all your bolts with pb blaster every day for a week before (make sure you get the upper rear shock bolts).
Jack it up with the wheels off, pull the shocks, sway bar, and track bar (all can be done easiest at the axle) push the axle down and pop the coils out. Put the spacer in and fit the coils back in (nows when the compressors are nice. Bolt it all back up but leave it loose til it's on the ground. Move to the back and do the same. Here the only difference is the track bar is easier to pull at the frame.
If you do a full lift the only difference is that the top shock mounts have to come out too.
You can do it.
Metric tool set
Metric open end wrenches
Breaker bar or length of pipe
If you pull the skid its a bit tougher. For that I recomend a compressor and impact. Tighten the bolts a bit first then loosen them. No idea why this works, but trust me, it does.