Just my 2 cents from someone who was rather inexperienced and is rapidly learning lots during my engine pull. I had a hard time figuring out how to get the accessories off while the engine was still in. My massive amount of dried oil everywhere probably didn't help, but as I'm sure you know, everything is really tight up there. Having your HICAS deleted will make it a hair simpler, but for me not having seen the PS pump off the car, it was difficult to figure out. Once the engine was out and I could clearly see everything it wasn't bad. Hopefully if you go ahead and grab a new one to have in hand you can get a better idea of how everything will be connected up and fit together. Good luck!
As for your other questions, I'll let the pros help you out :)
