I will try
Health concerns/ issues/hazards I am aware of:
1., Nickel allergy: if you have, you need to stay away from alloys with high or any Ni content
2., Titanium dioxide forming on Ti when heated over 600°C. I personally don't know if it is a real danger/hazard or not but I am playing it safe and do not dry burn Ti in Kanthal sense but a controlled way. (You can find plenty on this in this thread or
here)
SXMini:
With its manual TCR settings it can handle all the TC wires I am aware of so this part is covered
Atty:
You need an atty with reliable connection. I am not aware of atties notoriously useless for TC but bear in mind that TC relies on resistance change and you don't want any loose/lousy components produce any of it but the wire itself.
Built:
I would start with single spaced coil on a well known atty
Wire:
To start, I would do either A52(Nifethal 52, NiFe52(48 etc) or Stainless Steel9304/316/410/430) or TiGr1
It is your call. All of these have advantages over the other but any of these is very good.
Ohms:
I would keep it above 0.1ohm, no matter what, the lower the TCR the higher the cold ohm I want to go
Process:
Make the spaced coil on a machine screw, or make a parallel coil on a coiler and simply undo the two coils and use one at a time
Do not dry burn the coils up to glowing if you dont have to, but pulse and warm up on low watt to dark orange for hotspot checking.
Perform a dry cotton test. It will give you a good starting point to see when your wick starts burning.
Finish the build, make sure it is well saturated, refine your temp limit as I suggested previously and you are in the game
P.S.:
If you do all this things on a dripper first you can nicely fine tune your desired temperature and explore how TC works, how it limits and cuts output at the same time