u should be fine. but with 5000K from just a bulb, i say you cant light up anything on the road.
btw, for these:
a) crack my headlight lens
b) melt my headlight covers
c) get done by the police for blinding people!
HID does those, not the aftermarket bulbs.
high K HIDs tend to blur ur headlight covers overtime and make them yellow over time.
the lens of the celica will be fine, i believe, from the HID or aftermarket bulbs. it's the covers you are really gonna worry about (IF you are to worry).
basically, dont think too much. you will be fine.
get a brand name aftermarke bulb. PIAA, MTECHH, POLORG.
dont buy EURO LITE, TYPE R or anything like that. basically, dont go cheap on the lightings. they are important.
EDIT: *** high Ks dont mean brighter. sometimes higher Ks give lower light out put. for HID, the brightest is 4100K - 5300K, anything above will lower the light out put. for aftermarket bulbs, it's better to stay in the 4000K-4300K range. (DO KEEP THIS IN MIND!)