Need recommendation on swap parts for ls3 porterbuilt truck

[Jmh68C10]

I am mid process on my 68 c10 build and need to order some parts. I trying to figure out what my best options are for a few parts I am ready to order. I have the porter built (stage 3 ) Version 7.

Questions
1. My Ls3 is out of a 2011 escalade so it has the truck intake (Tall). Will I have clearence for this?
2.What master cylinder/ brake booster should I go with that will give me adequate clearance with the Ls3. I converted to 4 wheel disc brakes.
3. Can stock exhaust manifolds be used? If so , I still may run aftermarket so recommendations are appreciated.
4. Am I correct in that the a/c compressor has to be relocated to fit with the swap? I have a 4l75e ordered from chevy coming in next week so I will getting the engine and trans set in hopefully next weekend.

I am somewhat getting to the final stages before I break it back down for paint so I would love to hear some advice from people who have completed similar projects. Here is my frame as it sits tonight.