i dont see anything wrong with custom plates. just dont get something stupid. a lot of my friends and people that i know have some pretty created stuff. here's some to give you some more ideas:

SVTTHIS (fully built B18C1 swapped civic)
NOLV4V8 (GSX running on 18 psi with motor swap and other sh!t)
NX N HX (NX nitrous in civic HX, but its now a B18B)
JUCDTIB (Nitrous in a tiburon)
YBELEGL (why be legal , car club is Barely Legal Racing)
FASTFAM (H22 accord wagon)
2CIS2NV (to see is to envy)
TAI PAR (integra type R)
ITR (dude in my neighborhood has that on his black ITR)
V10EATR (some bada$$ supra i saw)
2QK4V8 (incredibly fast ls turbo civic)
CNTCTCH (plates on NSX)
JDMSTYL (jdm b16 swap in a 92-95 civic sedan..other JDM goodies)

these are mostly 7 letter/numbers but it still gives you some ideas