Budget build and forced induction, not exactly two things that go together like ham and cheese.
Magazine articles and numbers seem possible, but longevity is not accounted for in those pages. End of the day I've seen more ebay manifold and turbo failures than long term victory. Even the stuff like an On3 kit seems to be fraught with fitment concerns and question marks. To answer your question, your list covers the basics, aside from oil and water lines, boost and fuel management, and the million little fittings and hoses that will nickle and dime you. Being handy with a welder and cut saw and buying bulk piping is a requirement of doing your turbo system, if you aren't comfortable with that or have friends who are I'd think twice before accepting.
Bear in mind you can find a cheap used Vortech kit for $2000ish that is a bolt on and go affair which would yield similar numbers and powerband to a turbo , with way less plumbing and cutting.
My 0.02, not to discourage you but from watching countless friends go down the "cheap FI" road only to end up redoing it all with better stuff 1-2 years later.