You already said you have a Walbro, so that's good, but you need an MBC. Also, the Megan is the same as the $60-80 SS o2 on Ebay, but it costs twice as much. Don't need the Megan brand.megan o2 housing, megan downpipe, cat-delete and greddy exhuast - If you got all this megan stuff, why did you spend about twice as much to do a Greddy cat-back? The entire Megan TBE is only $550 shipped. No need for any of the Greddy cat-backs...
fujita cold air intake - Say WHAT??? Eeek, where in the world did you come up with this?
pte 680cc injectors - Completely unnecessary and a waste, imo, because they aren't needed on the stock turbo, and any real upgraded turbo will need bigger than 680s. They aren't useful now, nor later.
reflash - Excellent choice, depending on the tuner.
No, there is no reason for injectors. Sell them, then get an MBC and LICP. The fuel pump allows for greater fuel flow under boost. Our fuel pressure goes up 1psi per 1psi of boost, and the Walbro can effectively run the higher fuel pressure needed when raising boost. It also is less prone to failure than the stocker.
You don't need to touch the injectors nor fuel lines.
A BR TBE + ported/coated stock exhaust manifold + install would have also been $1100, but it would have made more power, weighed 10lbs less, and you wouldn't have a manifold that's going to crack in a year or less. If you just did a full Megan exhaust instead of mixing it with the Greddy, it would have cost $200-300 less.