My advice is not to use nickel
I'm only sort of kidding, in the
sense that nickel is not the wire type you want to use for a super nano anything. It's barely the wire type you want to use for dual
coils, though certainly that's way more feasible with the appropriate gauge.
It's just going to be really hard to get the resistance you want with a nano nickel coil. Maybe okay with a single with the right gauge and enough wraps, but yeah, it's not really an "idiomatic" build for nickel, nor is the "dragon" wicking method too common for this.
If, alternatively, you just want to make a nice nano coil you can run on TC, I'd highly recommend trying out some stainless steel instead.
If there's some reason you don't want to do that, someone else will have to answer your specific questions as I largely moved on from nickel for basically all those reasons. Just my $0.02.