For the starter, take about 4 oz of the kit lme and boil in 1L water, cool to 70f and use that to start yeast the day before you brew. Pitch the whole thing. If you dont have time to do it, I'd skip the starter.
Temp in mid to high 60's should work well from my memories. Check white labs webpage. I've found it to be a relatively forgiving yeast.
Good luck and .