How should I plan a hiking trip for the smokey mountains?

[Benjamin]

Hi, I'm trying to plan a backcountry hiking trip in the smokies mountains that will last about 5 days. I'dlike to know what kind of permits I need as well as where to find them. I also would like to know if and where I can park my car and leave it for a few days. I plan n driving through Cherokee, nc, and stopping at newfound gap to begin the hike and finish the loop. Or, because it isn't winter, I might drive down cling man's dome road and begin there. Either way, I haven't been hiking in a while and I do have experience, I've only forgotten some of the formalities. Thanks.