What to do next????

Okay I have a 2001 honda accord ..it has the bottom of line 4 banger...
2.3 lt. soch NON_VTECH...135hp stock...
---I have already
aem cold air intake (worth the money biggest gain yet)
aem pulley kit (awsome because my a/c doesnt rattle my car anymorelol)
DC sport headers -ceramic- (nice boost in power)
magnaflow cat back exhaust (no gain until headers were put on)
i know it's not a performance part...
but street glow headlights are really nice looking there not to blue
there really white it was a nice addition...way better than stock yellow
----------------------------------------------------------------
---when i got the car it had 38,000 miles which isn't bad for a honda i got it for like 9950 before tax title and intrest from my loan i think now it's like 11,700 anyways i changed the sparks and the spark wires and i put in new transmission fluid ... only use synthetic oil (and yes it makes the car run better for real..it also adds on the dyno 1.7hp haha)..i maintain her like my baby ..rock ahh the baby on the tree...
I am just not sure what else to do..so any suggestions would be great......Thanks

thats the engine i have

*F23A5- USDM 2.3LSOHC 98+ Accord DX (135hp)

Maybe some springs and shocks or coilovers. Some new tires or rims and tires. Other than that I'd say a turbo kit or H22 swap, but if you're still making payments I wouldn't bother.