My Opinion (Done lots of tuning) :
1. Vipec V88 - Lots of features, then some, and plenty of logging \ inputs \ outputs.
2. I have a nismo 275lph intank pump. Stock Fuel rail, and 555cc injectors. The Nismo pump is rated at 275lph at 80psi. Which is heaps. I'd say enough for 400rwkw. 180lph was enough for me to just touch 300rwkw and start running out of fuel. It also drops straight into the stock position, you absolutely do not have to modify a thing. Touches the bottom of the tank too. EXTREMELY quiet.
3. Injectors - Whatever the biggest Nismos you can get. If they make bigger that 777cc then get them. If not, not sure on what else. Aim for a 4 hole spray pattern, and something that bolts in easily. They all do a good job. The bigger the better incase you decide to use E85.