You will need a good press to complete this task, and I think you will find it worth your time and money to have a trusted shop press them in for you.
When I did mine I just removed the entire arms from my vehicle (which can be accomplished with some basic hand tools, jack and stands, spring compressor and ball joint separator). Then you will need another form of transportation to bring the arms to the shop for the pressing.
My dad and I did my lower control arm bushings this past spring. I installed the Del-a-lum lowers in place of the old stockers.
My dad made a miniature press out of square tubing, and a bottle nose jack, with various plates for pushing and tubes for receiving. We did ours right on the garage floor. My dad is extra handy, tho, so that made it easier. Without him, I would have taken it to the shop, like MABM9C1 said.
The process wasn't too hard, once the arms were out of the car. Getting them out is one thing, so is putting them back in... especially w/ GW front springs... SHEESH!