In my quest for better handling, whats next?

For what you're doing, you're good to go. Enjoy it. If the center seems a just a bit too sloppy, check the front wheel bearings for looseness.
If you're thinking about autocross - make that your next expense. Go have fun and decide if you want to do it alot more or a little more.
Events - Sports Car Club of America
Autocrossing the first time with your current setup will be fine. The softer front sway bar and low grip tires will match good enough. Use lots of self discipline with go and whoa pedals. By that I mean use the brakes before the turn so the car is neutral as you begin the turns. Rarely if at all will it be good to go full throttle. Use momentum and be smooth.

If you like it, then my suggestions for next purchases are:
1. Stiffer front sway bar.
2. Toyo RA1 or RA888 225 or 235R15s on 15x7 rims. Save your current tires for everyday, long trips and non-paved situations.
3. Better shocks, whether adjustable or non-adjustable depends on how interested you are in focusing on driving vs tuning, as well $$$.
4. Any specific issues that come up.