Okay, without the EPR valve you will need the cycling switch. I gave you two part numbers in a post above in this thread.
36 OZ. of R-134A may be a bit too high for this system as that is the full R-12 charge and R-134A is usually somewhat less. What type of oil did the compressor come filled with? Mixing oil types is not a good idea.
Some compressor come with a shipping oil, whatever that is. Or, it may have been filled with mineral oil for the original R-12. I always drain a new compressor and flush and fill with the correct amount and type of oil to match the refrigerant in use.
