Be back in a few months. I've changed springs and added air bags before...never changed shocks. Could I do the Billy install without a garage lift and use just a jack and jackstands?
For the front coilovers, pull the struts and take them into the auto hobby shop at MCBH KBay. You can use their coil compressor machine for around $4-5 and it takes about 5 minutes (very easy). Not sure if Hickam's auto hobby shop has the same machine but I'd guess they do.
If you don't have a 2nd car, just do the install at one of the hobby shops using their lift.