Ahhh compressor black death. You have a hard row to hoe my friend. Flush that system until you are sick of flushing it. If it is not 100% clean, you will be doing it again. If you have factory 134A, that condenser will be a pain in the ass to flush properly. You may want to just consider a replacement for piece of mind.
Luckily these systems are comically simple to rebuild unlike my Euro cars that can really test your patience. TXV buried up under the dash on the driver's side.
'94 is when Ford starting doing factory 134A from all my research as I want to update the system in my '88 to a full factory 134A setup as my compressor is dying and I like being able to purchase refrigerant all over, I keep my R12 for the small capacity systems in the Euro stuff. 134A parallel flow condenser is about $100 new (factory bolt in), dryer is $40 ish, orifice tube is a few dollars (I have the tools if you need to borrow them), NEW compressors in mid to low $200s, evap core about $125 (yep different between R12 and 134A), low/high side manifold hose $100 or so, liquid lines are way cheap best I recall. Weigh and balance all of your options before you start buying parts.
I use this on the fittings and orings on my rebuilds.
http://www.ackits.com/c/Nylog/Nylog+O-Ring+Lubrication.html
Hope it helps