350 lights give or take a few
When I purchased online with store pick up I was given the option of bright white and warm white. Both are still available.
C3 isn't a mini bulb, it is small but not a mini C sizes go from C3 to C9 that are the large christmas lights
Go to the store and read the application on the box.
I hate to tell you that if one bulb is bad half of the string won’t work, giant pain! I had to buy a tool that fixes LED light strands, it cost about 25 bucks but is worth every penny, I fixed 7 sets of lights saving me a lot of money. I can’t remember the exact name of it but it’s made by LightKeeper. You could also return to the store or call the number in the paper that’s included in the box.
I've only had mine a week, but they are LED's so they should last a long time.