Hello fellow New Jersian and Halo user! I recently just quit smoking myself with the Halo Triton system! Love it! It does take a bit of getting used to versus analogs but coming off a pack a day, I haven't smoked a single cigarette since I got it. One thing I noticed is you do get a bit of dry mouth with vaping. I started drinking more water to counteract it. I was never a fan of the cig-a-likes so I decided to try the "eGo" or since it's Halo, "vGo" setup and it's helped me IMMENSELY.
Definitely play around with Juices. I don't know where you're located in Jersey but I found a neat local shop in Milltown (central NJ) called Jersey Smoke. The owner, Frank, vapes a lot and is very knowledgeable. He has a ton of equipment and juices in his inventory and is always happy to chat and recommend new things.
I have my first Variable Voltage battery coming in next week from Halo and I'm excited to see what happens when I can adjust the voltage of my battery. There's SO MANY factors to consider in vaping. The PG/VG ratio and Nicotine levels can greatly affect how your vape feels so mess around with some combinations til you find something you enjoy.
In my experience, the chest discomfort comes from your lungs adjusting to the fact that you aren't destroying them anymore. You'll be coughing and hacking up all the nastiness you collected while you were a smoker but afterwards you (should) feel brand new
I started with tobacco flavors but now I'm experimenting with sweet or fruity dessert flavors and I really like them. Normally I carry around both my Tritons. One filled with a tobacco style liquid for when I really crave an analog flavor (coffee, after a meal, while drinking) and the other I fill with a desert flavor for when I'm just relaxing and want to vape something delicious without that harsh tobacco taste.
Hope this info helps!