^^ silver, people don't necessarilly have mental illness or lack of judgement to want to spend that much. Some people just have the money.
CiscOfusiOn, those are hardcore upgrades. Are you planning on building a race Celica capable of running the quarter in the 11's?
IMO, if you are going to spend that much money you shouldn't settle for anything less than 500 whp. You need a big turbo, and from what I have heard so far, I don't think the turbos C2Power uses can boost enough to make that power. The Stafford Fabrication turbos can boost enough for 500 whp I believe, but you may have trouble acquiring one in the near future. You can always of course get a custom turbo kit made.
I also noticed you have a 2002 GTS. That is good. You can use the PowerFC. C2Power turbo kits come with the e-manage, however there is one person in Europe on that other Celica site using a PowerFC with his C2Power turbo.
Yes, there is a way to control nitrous dynamically, and that is with a progressive nitrous controller. The best nitrous brand, NX, also has the best progressive nitrous controller on the market, the NX Maximizer. Yes, NX does have a direct port kit. You will of course need the nozzles installed into your Intake
NX 4 cylinder Direct Port Kit:http://www.nitrousexpress.com/Pages/80004EFI.htm
I assume you will use nitrous to spool your turbo, gradually tapering off, and have it off during full boost. This may be more power than you can put to the ground even with electronic boost control to be discussed later in brief. Of course a lot of power is possible with drag slicks and a custom race suspension setup. That is another area of development you may want to look into. You may find it a waste of money and effort to use nitrous in addition to your turbo. You may not save that much time down the quarter even if it does help. But if you have the money to do the other things you listed, you may not mind trying it out.
I don't know what you mean exactly by controlling the amount of boost on the fly. Do you mean with a switch or button as you are driving? You can have a switch rigged to change between high boost or low boost depending on whether you are driving on the street or racing with high octane fuel on the track. But that is a primitive setup. For your all-out turbo setup, you want to adjust boost dynamically via software. There is such a thing as electronic boost control in which you can set parameters of rpm, gear, time etc and specify how much boost is running within those parameters. The Hydra EMS looks like it may well come out, just when is the question. I would use that with your turbo due to its tons of sophisticated features and built-in boost control. anti-lag control is a key feature. If it comes out and works, it will own the PowerFC a thousand times over. I mention this product because I assume you don't want anything less than the best.
If you don't use the Hydra EMS when it comes out (or don't wait for it), you will need to use an electronic boost controller in addition to your ecu, standalone (PowerFC) or piggyback (e-manage, split-second). You can use the Apexi AVC-R with the Apexi PowerFC. You should use the GReddy profec e-01 with the GReddy e-manage. Of course other combos are possible, but I'd stay within one brand if the components work together. Product descriptions of Apexi or GReddy ecus or boost controllers can be found on http://monkeywrenchracing.com/toyota.html
as I'm sure you already know.
And finally, if you run in the 11's you'll need a helmet and a roll cage. You'll need to gut your car to a certain extent to fit a full roll cage. Trust me, I had to do that to fit the "halo" flush to the roof, and the sidebars flush to the doors.
Well, I think I may have answered the questions you asked.