[oil pan 4]

Diesels consume less fuel with a turbocharger.
I picked up between 2 and 2.5 mpg by adding the single turbo. A turbo diesel will use less fuel. The reason people think a turbo will cause an engine to use more fuel is because of gasoline motors, typically if you put a turbo on a gasoline engine it will use more fuel.
Diesels are different, the more air you give them the better power and fuel economy they will make.
I made no changes to the injector pump when I put the turbo on.

Since your fuel system is likely bone dry, it would be a good idea to have the electric fuel pump on when you are trying to prime and first start it up. That alone would be worth having the electric.
Don't replace the injectors unless you suspect them to be bad, its a few hundred $ you might not need to spend.

I say don't even bother with the factory glow plug controller. They cost around $70 and the cheap made in china replacements only last a year or 2. As a bonus, when the controller fails its favorite failure mode is the "stuck on" condition and burns out all the glow plugs.
A manual glow switch will cost less than $10 and will last the life of the vehicle.
For the glow plugs you should use G60 plugs, these are the self limiting ones. They last lot longer than the original early G7 and G11 glow plugs. Also do not use autolite part number 1110, they are the same as the early glow plugs.
From 2006 to 2008 I put about 20 glow plugs in. Then the first part of 2008 they all died again then I switched to G60 plugs and have not changed a single one.
The G7, G11 and autolite 1110 plugs are the early ones that like to swell up, burn out quickly and get stuck in the cylinder head.
Plus G60 plugs don't work so well with the early controller, they need up to 2 seconds longer power on time to reach the same temperature as the old plugs.