Bad injector, what else should I do while I'm in there?

[BlkSC]

I'm contemplating just saying screw it and getting a set of 190cc injectors, powermax turbo, and Airdog 165 and just doing it all at once...

But what I'd really like to know is what else do you guys think I should do while I'm in there? I have the updated oil supply and drain tubes for the turbo that will be going in. The previous owner had RCD put studs in it and they ended up replacing the heads as well. Anything else that should be done, I guess maybe as preventative maintenance?