I have a similar setup, one thing I didn't see mentioned is wheel backspacing. Hope you can fit the wheels after buying all that stuff!
I have Z31 5 lug hubs, junkyard $30 for both
Redrilled rear stubs
240SX calipers, junkyard $25 for both
Z31 rotors (front vented, rear solid)
Toyota 4x4 calipers + spacer, approx $150
SS lines etc.
17x9 wheels, ZG fender flares
Rebuild kits for the calipers are like what, $20?
I don't think I spent $1200...but I stopped counting after a while
Pretty sure it was more like $800. If it was more, don't tell me....
Owen