installing the IMS solution at home,.??

[BOOTLEG]

JFP,
As I prepare to put my EBAY engine in my car, I am trying to avoid the slippery slope of replacing things just because the engine is out of the car. So far, did IMS Solution, RMS, H2O pump, lo-temp TStat, DM flywheel, clutch & PPlate. I'd like to stop here but it's a 54K engine and has been sitting on my stand since 2015. Do I need to do the fuel injectors and AOS or are those easy to do later even with engine in the car?