Sounds like a good plan. It will be information overload, but building what you want with all that information is something to be proud of. You are on a good track to an awesome LS budget build which is what many people are after.
Good idea on the exhaust manifolds. I ordered some stainless no-name headers from ebay that were supposed to be for the LS1, but with the stipulation of "You may need to run a header plug on a few of them". This gave me a world of headache and wish I had not thrown out my stock manifolds.
'77 CJ7, LS1, NV4500/D300, Ford 8.8, 4" of lift, 33x12.50 BFG ATs...