My recommendations:

1) Take the suspension back to stock. You're already on stock struts, put the stock springs back on.

2) Take all the money you plan on dropping into aftermarket suspension parts and spend that money on autocrosses or track days. <---- This means work on the driver mod.

3) Once you know how to drive the car with stock suspension and know what the car is/isn't doing on the track/course, then begin making suspension upgrades.

All the parts in the world are useless if the driver isn't aware of how they should be best taken advantage of.

Do NOT cage a street car. Cages are meant for cars that are being driven by a helmeted driver.