Hey jeff and welcome.
Sounds like you are thinking about starting out well! You have already had the standard suggestions of ego for first purchases. That is what I started with and it worked well. Within 4 weeks I had a Vamo V2 which is similar to the Provari. This is the point where the Provari owners show up with torches, pitch forks, and a noose. The Provari seems to be a great device but I don't have one. It is a higher end battery mod that is variable voltage (vv). It doesn't yet do variable wattage (vw), yet.
Taltos
Vamo similar to a provari??? That's just wrong. Whoever could come up with such a statement? Somebody get a rope! JK
I have a provari and now thinking of getting a Vamo V2 (not a V3) just for the VW aspect. I started with an Ego-c, then a twist, provari, and K100 (because its a mech and it was available at the right price). There are a bunch of clearomizer a out there and EVOD is well regarded although mine started leaking at the mouthpiece. I currently use a Kanger T2 or a protank. Both work well for me.