Shew, good thing!!!!!! LOL I have 35w kits in my headlight and fog lights. Yes I'd suggest the relay harness for your fogs as well, I have the harness on mine because only time I use both sets is at night and I use the fogs for highs.. LOL Most of the time I run my fogs at dusk/dawn with my parking lights...
IF you get the Dual Bi's all that does is tilt the bulb IIRC which if you have standard housings they will not do much for you. If you have the halogen highs, you'll never use them, they are just there for the safety inspection in some states/countys so you can say yes I have high beams. If you don't have that where you live then just get the standard set and be done with it. I have 6000K in my heads, 8000K in my fogs.. When they are both on, can't tell much of a difference. When on at different times you can tell. I'd do pics, but camera doesn't do justice....
I got mine from DDM
AND don't forget to unhook your DRL's.... ;-)