if you do take this on yourself, either now, or after Blue Oval, the procedure I've used to relieve fuel pressure is to start it, disconnect the fuel pump reset (passenger side behind the kick panel on my old '97) and let it stall. I also pull the fuse to my aux fuel pump that feeds the fmu for the supercharger.
my experience with the clips is to just go slow, steady pressure and the a/c line tool works just fine and sometimes it's the one that's just a bit smaller than what you'd think to get the clips to release.
I also put the dust caps from the new filter on both ends of the old filter prior to removal to keep the residual gas inside; a bunch of paper towels or shop towels are a must as there will be spillage. dry everything off real good in addition to evaporation.
good luck.