3/32 will work but for a fixed I would use 1/8. Most of the chainrings will be 1/8 anyway. Any 130bcd will work but for fixed one that is not ramped will work better. Since it is fixed there will be more tension on your chainring while riding than on a geared bike, so you want a chainring that is just straight cut - meaning the teeth are not cut to allow for shifting. Chainring bolts are the same. Not stupid questions, everyone starts some were.