I'd focus on chassis, brake & suspension upgrades for the time being..

h:
You do plan to turn and stop well, right?
On the subject of power, though: Since those cams and ECU are better suited for an N/A application IMHO, I'd look into Crower's line of B-Series stroker kits....running up to 2.26 litres in displacement. :eek3:
You'll need to decide on your power goals and budget soon, before you take the motor much further.
My 2.7¥.