Have you hooked a test light up to the injectors to see if they pulse? That would be the next thing to check.
If they don't make sure the ecu has the starter signal, which would cause the injectors to not pulse.
Yes the FPR needs vacuum.
Those extra wires I would check the ecu pinouts for them but of the top of my head.
The black/white would be a starter wire
Green water temp maybe, although it doesn't look like a standard wire.
Black/yellow is a sensor usually depends on adm or jdm etc so check for your specific engine.
Brown will most likely be the earth for that sensor.
The two on the far right look like reverse lights.
Also check your timing mine was waaaaay out and was cause me issues when I first did my conversion.