You can get a 200W box mod for around $40-50. There'd be more than enough power there to run whatever you could possibly want. I like the idea of having excess power to spare, you never know what you may want to try next.
I vape most of my stuff around 24 watts. Of course that is single coil 1.2 ohm on a dripper. It can be done but not much head room. You are really limited.