Just to volunteer my own experience:
I started with an el-cheapo flea market ecig. From there I went to an eGo stick battery and a disposable clearo, then to a 1300 spinner with a Protank, at which point I got a mech.
I put my Protank on that mech and was happy for a couple weeks. I got the little black ohms tester, and started rebuilding my coil heads, but soon learned that at the voltage my mech supplied I would go through Protank coils pretty quick. It was RBA time. I got an AGA-T2 and got into making wicks and coiling them. I'm happy now.
There are a lot of people in vape shops who will preach to you that sub-ohm is the way to go, and the lower the ohms the better.
So far that's not been my experience. Some will tell you that ribbon wire is the only way to go, and .3 ohms is where it's at, or lower. Do not listen to this.
DO test your ohms before you put that atty on your mech.
If you cannot test it you cannot trust it! And make sure you do not have a short. After that it's all about learning where you want to be, and winding you coils accordingly.
If you go for a mech and an RBA I would suggest starting out with 28 ga. kanthal, and a 4/3 wrap. Go from there, test your ohms, and grope around for what works best with the wick you have been able to roll after watching all the YouTube videos on the subject. Start out with 400# stainless steel mesh. Get the stuff you need to make wicks, and get the means to test your coil ohms. The mech you chose is not something I will advise you on, just go with what appeals to you, in large measure a mech is a mech.
Make sure you get the right batteries to run that mech and RBA! AW IMR's, the red ones, or the Efest red ones are the way to go. Personally I like the 18650 2000 mAh ones.
For the RBA you might want to consider the RSST. I didn't go with that, I got the AGA-T2, but your mileage may vary. The RSST is a simple cheap beginner's RBA, and a good one to start with. Just take your time, go through the YouTube vids, and work it out. Get a decent hand torch, a spool of 28 ga. kanthal, a sheet of SS mesh, a metal dental pick, that ohms tester (or a cheap multimeter from RadioSlack) , a pair of big nail clippers, a large paper clip, and a pair of hemostats. You will have fun working out the hot spots in your coils, and trust me, that coil wire moves VERY easy when glowing.
Have fun, it's all a neat adventure after you get the mech and the RBA