I have found that the 4.5 Black Nickle from Barlows are perfect for 1/2 to 3/4 ounce night spinnerbaits. I do a lot of night fishing and these have been the best blades for me. If you are in a pinch, paint a blade with CS "Smoke" powder paint. They work good too.
Also, if you are ordering from Barlows, you may want to get some of their black/red Starflash skirts for night baits. Those or traditional black bucktail have been my best for night baits.
Use a good ball bearing swivel.