Recommending a set up can be so subjective. It sounds like your gonna vape more long term, and the tank itself is really all about a more personal choice.
I smoke mouth to lung, but find the baby beast to be the most satisfying. I tried the mouth to lung tanks, HATED them. The baby beast is supposed to be more for the direct to lung smokers.
As far as the mod itself goes, again, thats more of a personal choice. What features do you want, Myself, I LOVE the smok alien tc. Just feels great in the hand, its a smaller mod so it does not feel like I am have a brick in my hand, and love the fire button.
Honestly, I would take a trip to your local vape shop, and look at a few, hold them in your hand. I know the Smok Aliens tend to get some crap, but imho, if they were so horrible, they would not sell like they do, and mine has been rock solid. Manufactures are cranking out mods and tanks so fast, and most come from china, its a crap shoot on how long your will last. I have seen just as many issues with eleaf and other brands as I have with smoke products.
Just find a mod that fits your budget, find the features you want, then pull the trigger. To debate the this brand vs that brand is the the same ol tired argument as ford vs chevy. Its in all how well you take care of it. You may get a great one, you may get a bad one. Best of luck!!