uhm, so youre looking for genesis style atomizers, correct?
assuming im correct...

i started off with my rsst. lots of info and builds on youtube, and right here in this forum. simple and easy to understand. with black friday sales, ive seen em right around $20 from US vendors. i think maybe 101 vape or
vaporbeast. cant remember. haha. but with the provari, i believe you have to be at around 1.2 ohms for it to fire, if resistance is any lower the circuitry might cut off. i say MIGHT because i've read that some have got their provari to fire at 0.9 ohms. but i have not/do not own a provari...so you'd have to have someone else comment on that.
i know you said you had a friend helping you, right? what
tank did he suggest? is he going to help you build it?