Long term turbo project to be started

Ok, I put off on the tires for a bit and ordered a cold air intake and under-drive pully.  Later on I'll get the tires (Azenas RT-615 are what I'm intersted in).  All that will be done and installed hopefully by summer.  Thats when I what to start my home turbo project.  I know its gonna cost an arm and a leg, but I'm thinkin of buying piece by piece.

Ok heres what I've got so far parts wise.  Garrett GT2860RS (Disco potato) turbo, TSI front mount intercooler, aeromotive fuel pump and fuel pressure regulator, a TSI injector control unit (also acts as a turbo timer and is used on many BMW turbos), HKS super sequential BOV and autmeter guages.  I found the map on the Garret turbo and did my calculations and found that it offers the best all around boost.  all points from 2000 rpms to 6500 rpms fell withing the map and near the island at 10 psi.

Any thoughts or corrections on the parts I chose?  Anyone think theres a better turbo?  Oh, I'm not so sure about the injectors.  Will I need higher flowing ones?  And I'm a little iffy on the tuning necessary to get everthing working together, like ecu and such.  Theres the shark injector software but Im not too sure on how those work.

Im guessing this will take me about a year and a half to get all the parts unless I get a better job.  

Id definetly go with bigger injectors, if only slightly.  Dont start putting 1000cc injectors on, but something bigger than stock, for sure.

Also, how high can you put the PSI before the disco potato starts getting VERY peaky? (read: on/off switch)  It could be interesting to try.

Id also think it would be better to get a dedicated turbo controller, but hey  

the disco potat is really for good for 4 cylinder motors but it starts to get kinda iffy on 6's  

a disco potato on a Bimmer? that could be a bit sketchy...  

Heres the compressor map.

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2860RS_739548_1.htm

If you do all of the calculations the points land on the line above 1.5 and 2 (the pressure ratio I got was 1.78) from a corrected air flow of 10.42 to 33.86.

It all stays inside the map which means I'm gettting boost at all RPMs from 2000 to 6500.  I can raise it to 15psi and I'll still be ok in the lower RPMs.  Any more and I lose boost in the lower RPM range but get better efficiency at higher RPMs (the middle island is where the turbo has the best efficiency).

What do you think?  

well if you never wnat to raise the boost pressure later on its the turbo for you, but if you do i would think about something a little bigger.  

Yeah I know what you mean.  It was even a small turbo for Daves Project Silvia.  Any ideas on a bigger turbo that will still give good response?  Thats the main reason Im goin turbo.  There are superchargers available but their Vortec style chargers and we talked about them already lol.  

i would go with a T04E-50 stage 3 .63A/R with the 2.5L you got its good to 350hp, if you want more you can go with the T04E-60 stage 3 .63A/R that's good to 400hp, for 450hp you need the 62-1 fullsize stage 3 .63 A/R, for 500 hp you need 62-1 fullsize stage 5 .63A/R, if you need more power then that tell me because i can take you all the way to a 1000hp turbo.