SS has a lower resistance than Kanthal. A 24G wire might well be below where you can build and still end up with a reasonable resistance, especially in a dual coil build. As the resistance isn't even all that important if you're using this for TC, I would simply build to what is likely to work best with you mod. If you're using 316L SS, which has a very low TCR, a build with a total resistance of 0.3 ohm or higher will likely work best. On dual coil builds, I typically use 28G with a 3 mm ID and a total resistance of ~0.5 ohm. For example, building to an example 1 ohm single coil setup, 24G Kanthal would require ~10 wraps on a 3 mm jig, while 24G 316L would require a coil with over 20 wraps.
Of course as you can use SS in wattage mode as well, you can keep that in mind when deciding what resistance you're going for. I keep 26G and 28G SS in my stock of wire.