I'd say vape it for a bit in wattage mode, since it is SS, and get a sense of what wattage you like. That should help you in determining what "ramp up" wattage you desire to get you into TC. You can most certainly play around with the actual temp "ceiling" limit to determine if you like a warmer or cooler vape, but anything under 420 is generally considered safe (although some mods are more or less accurate at TC, so you may want to give yourself wiggle room). But, just sort of taking some time to try some different temperature points and see what you get should give you a good determination.
I set my temp control limits (when I use it) far lower than that, but I am an extraordinarily puny "wattage weenie" and vape MTL.
Good luck, I hope you get to a good place in TC. Don't overthink it, though, just sort of start various experiments and see where the best "landing point" is for you.
Good luck,
Anna