What ECU are you running?
Also worth checking the impedence of the injectors they should be high impedence (if they are low then yoiu should have resistors fitted to the loom)
I'm guessing the fuel rails are Raduim or similar looking at the photos, can you read the static fuel pressure?
At the end of the day it's the same as any engine, do you have spark, fuel delivery, or are your flooded, pull the plugs, then move to does the engine have compression.
The big problem is it hasn't run in a long time, so why was it parked up? did it run when it was parked up, or has someone started something and not finished what they were doing.
I put mine away for 7 years, put a new battery on it, oiled the rota faces (spun it over by hand a few times to make sure the apex seals were oiled up and the chuffs sounded equal), and it started 2nd turn of the key, on the old fuel.