i'm planning to change from 4300k to 9000k what do you guys think?

 

youll be back to 4300 in one night...guaranteed

4300k bulbs are somewhere in the 3200lm range each. those 8-9-10k bulbs are like 2000, maybe 2200...barely brighter than a decent halogen bulb, with a whole lot less useable light. do yourself a favor and stick with 4300

 

If you need the bulb, or a kit; let me know.

 

4300 for the most useable light without a doubt. If you go higher only go to about 5000