Yep. You're not going to get 300hp at the wheels until you get at least a ported 14b, 550 injectors, AFC and upgrade the intercooler piping.

If you're getting the car for show and system, then your plan sounds good. Otherwise, you'll need to move more of your budget towards the motor.

SEA97GS - 15.785@88.20MPH
NW.DSM.ORG
HotShot Headers-Custom 2.5" exhaust-MSD 8.5mm plug wires-NGK Plugs-Nitto NT555R Drag Radials on RX-7 wheels-Eibach ProKit Springs-Tokico shocks-front upper STB

97 Eclipse GS-15.463@88.57MPH - RIP
92 Talon TSi AWD-12.927@105.47MPH