Personally, if they know you vape, and showed little to no interest in it, the gift would would probably go over like a fart in church. If they did show more than just a passing interest, then yes, it would be a great gift!
I have a resident who lives in the building where I work, and she had said she would like to quit smoking, especially after seeing me quit. Wanted to know how I did it, and when I said that I was vaping, she really got interested. Then she saw my gear, a standard eGo with a Mini Davide, and an MVP with a standard Davide, my "extras" pouch with 2 10ml bottles of juice, charging cords, etc, and said flat out, "That is too complicated for me." After going over all I knew about vaping, a Blu kit or something similar was more her speed. Something that was easy to charge, and she could just get pre-filled carts, and be done with it.
Here's an idea that's relatively low risk for you, instead of buying the kits right away, why not pick up a disposable Blu, or Njoy, or something along those lines? I know it's not the best, but how many of us had their first ever vaping experience on mech mods, vv/vw, clearos, cartos, tanks, etc?