I'm going to throw this out there just to get you thinking in some new directions. When I first started vaping, I felt it was essential that I buy something that looked as much like a conventional cigarette as possible, partly to avoid the stares I was afraid I'd get from some of the less conventional e-cigs. I started with an L88b (essentially a Blu or a Volcano-type, but unbranded.) It was OK, but the battery life was limited and the carts needed frequent refills. I switched to an RN4081 (starter kit from AquaVaporCigs for only $50) and found it was a big improvement. Better battery life, longer lasting carts, and still looked like an analog.
But recently I started looking into bottom fed juice box mods and decided to try the Wetbox. I really wanted one called an Ali'i (rnrmanufacturing.com) but they're custom made and in limited supply. And pricey, at $135 (not incl. attys, batteries, charger, etc.) The Wetbox didn't include a lot of essentials, either, but I was able to put together a package of what I needed to really get started for about $80.
Let me tell you, I am so glad I went this route. The Wetbox looks NOTHING like an traditional cigarette, but with an on-board 3ml bottle of juice and a battery that lasts 6+ hours, I can fill it up and go. It lasts me all day, and is a dream when driving. No more constant refilling, no need to carry a bunch of supplies, and more consistent throat hit and vapor production than the other e-cigs I own. It has some issues (hey, nothing's PERFECT in the world of e-cigs!), but all-in-all, I am happy with it.
So before you commit to the traditional look of an e-cig, or even if you DO buy a 510 and an RN4081, poke around the forum and on YouTube and look at some of the various juice feeder mods out there. There are lots of options (REO, Journeyman, Ali'i, Juice Box by Carlos, Wetbox, Mr. Puffer, the UMP) and all have their pros and cons, and all have their followers and detractors. But for sheer simplicity and convenience, any of them should do you well.