If you want big reliable power,then be prepared to spend big dollars.
As soon as you start upgrading one thing,you willl need to upgrade other things,and then other things will need upgrading because of your last upgrades and so on and so on...
Power FC $1400
Injectors $800
FMIC $500
Fuel pump $200-$480
Coilpacks $470
Greddy plenum $1000
Full exhaust $1000
EBC $400
And if you seriously want to use a 3540 you will then have to budget for a rebuild. $8000-15,000.
And we have not started on brakes,and drivline which will all need to be upgraded.
Get all the basics done first then see how you are with the wallet.There are alot of good threads on here for first upgrades,check them out.