Definately buy some bottles of
juice. Get some with 24 mg and some with like 18 or so. But yes, I agree with the above posters in that you need a pv with more "balls". Something like the Silver Bullet is huge compared to what you're using, but for the money I think it's still the best true 3.7 volt device out there. Most people would probably tell me not to recommend such a big step up in price (or size for that matter) for a newcomer but if you combine a silver bullet with some 1.7 or 2 ohm cartomizers, you're gonna have a MUCH better experience, and there's no disputing that. I always tell people that they'll end up with a big-battery device eventually, and if you stick with
vaping, you will. Save the cash trying out the various "disposable battery" type kits, and just jump in. A silver bullet, charger, and 2 18650 batteries might set you back 120 bucks or so, but then all you spend money on from there on is
juice and cartomizers. Maybe replace the batteries once a year. That's it. And you'll have all the throat hit and satisfaction you want.
I love the silver bullet, but there's a lot of other great choices out there. This is just my opinion, but I have a number of big batt mods now and I wished I had just stepped up to these years ago, instead of messing with KR808s, 510s, and Egos.