Well, if you've never smoked analogs, I don't know why you would want to use eCigs; they are really a replacement for analog smokers, and I would not recommend a non smoker starting to use them.
That being said, it is your decision, of course.
I would especially recommend that you not use any nicotine eLiquid, because you risk getting physically addicted that way. There are tons of great flavors out there, you need never get bored, believe me.
I understand your desire for an auto, I am like that too, it is more like an analog experience, but, especially with 510s, the auto batteries get liquid in them and fry dead on a regular basis. I have personal experience with this. The manuals are sealed from the liquid and generally last longer because of this. Plus, as mentioned, they give you more control over when the atomizer powers. You can draw real slow that way, and get a real good hit from a very dense vapor.
They have 510 kits for $45.99 at
myPVshop.com Electronic Cigarettes - Joye510 Electronic Cigarette Kits and they are they have a 10 % off coupon code IVAPE10, which would bring it down to about $40 for 2 batteries, 2 atomizers, 5 carts, and a charger. That's a good price, but it's for a limited time (grand opening).
I ordered an RN4075 kit from them and had a good experience, and the order got here really fast (a few days). And you can chose whatever combination of 510 manual and auto you want for the batteries. They carry a 510 passthru for $13.
They have free shipping on orders over $50, so if you pick up some spare attys (which you should), hey, free shipping!