If the only mod you have so far is the shocks, then keep the shocks and maybe buy some R tires. You'll be much better off, and much more competitive in stock classes (where youre allowed shocks, brake pads and R tires. If you get springs you'll be bumped into STS, where the competition is stiff, and almost all the cars are better prepared than a dx with lowering springs. I'd say race the car in H-stock for a season, see how you do, and then decide if you want to tackle the ex$pense and super-competitive classes.

I raced for 2 seasons before I felt comfortable leaving H-stock.h: