I have never seen a bushing squeek. Closely check your ball joint; that is much more likely. Not a whole lot cheaper though.
You are talking easy "gravy" work for a technician with the special tools. You are talking a near imposible DIYer job with many safety and difficulty issues. Go to an experienced independent; you don't need the high labor price on this one.
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician