High Performance 318ci

Add better heads than stock for even more power, Trick Flow probably be over kill though.
The main problem with your original plan was way too much cam for streetable 318 power.
Most street cars will never see above 5000-5500 rpm 99% of the time, idle to 3000 rpm is where your mainly at.
So want a cam that works idle-5000 rpm with a lift that's make good use of chosen head, stock head .450"-.500", lift is more streetable power than duration.

You could also always add 4" stroke make the 318 feel more like a big block.