Im looking at buying the fogger v4 with the increased size and copper bottom screw and it will be my first rebuildable anything I have used. How easy is it to put the coils in and all that. Is the air flow good? Will my cloud chasing dreams be realized? I got a new Hana mod Clone and this will be the tank for it. I am looking for great clouds, flavor and ease to rebuild. Is this the one for me?