At what temp should I set the oven to bake this? thx

Assuming you are not in a high altitude setting, the best would be 325 for conventional and 300 (or 310 if you oven has it) for convection oven. I always put a small amount of moisture in the cooking process when I cook a quiche, 1/3 cup of water tossed into the underlying sheet pan works perfectly!

FYI the crust should be pre-baked at 425 / 400