I would remove the fuel pump relay ,jump the pins for a pump direct operation,this will isolate any FP Relay faults if any, next to check would be the CPS . The OV relay faults cause cold starting symtoms.
I have oft repeated this ;Do replace the Fuel and voltage relay along with all the old fuses and the car will be very dependable . These three items are the major cause of unreliability ,mostly due to age related wear and tear.I had resoldered mine .
I hope this helps
regards
mak