Well at least you can turn your EMFPA down so that the metering unit is fuelling for upto 7psi as Ford intended (returning some economy and response) and let the 5th do the rest! This will give you a much better chance of reliability and if your using a MF2 (which I guess you are) you can have slightly more accurate fuelling from 7psi to whatever you choose to run.
For people wanting to stay MFI it is the best option really