I'd get a quality kit. I suggest Morimoto or Spencer's. I"ve had the same Morimoto kit for 3 years on 3 different trucks with no relays. Never once had a problem.
Cant you make the headlights manaul rather than auto? Something with the dome switch overide?
yup, you put a resistor inbetween the two wires for the sensor on your dash. you will have to search/google it as i have forgotten what resistance the resistor needs to be to defeat it but ive had mine that way for 6-7 years now