91 240SX KA24DE rebuild questions

[Spectre420]

Hello fellow zilvians!
I am rebuilding my 91 ka24de for N/A POWAH (for now) and I want to make sure my plans will work n I'm doing it right.
I was thinking about a 200-210 crank HP goal.

My build is looking as follows:
Sohc pistons 11.1:1 w/ a 20 over bore
Cam swap 248/232 or 248/248
Cold air intake w/ k&n filter
Throttle body/intake plenum spacer
Thermal gaskets all around and thermal bypasses/wraps n such
4-2-1 headers and 2.5" exhaust with electric cutout
Ps/AC delete
Quest alternator
Lightweight flywheel
Clutch fan delete w/ electric fan on thermal switch
Tripple core aluminum rad

What I'm not sure about:
Would high power ignition help?
Will I need new injectors and or a tune?
If I need a tune, if I track down a bikirom board will that work?
Will I need a new intake manifold/large throttle body for these goals?
Will I need intake/exhaust(mainly) porting for these goals?

If down the road I want to run say, 4-5lbs of boost or whatever is needed for 250-275hp on 93-94 octane would it run or would it blow? I have a t25 n some other Turbo stuff but not enough $$$ for a rebuild anytime soon to forged internals.
Thanks