Grimace is right it is 18000 ft. elevational, but don’t let it be intimidating, dispersed over 70 miles it isnt too bad. the trail north of newfound has far less climbing so if that’s your direction of travel, you picked wisely as you’ll be tackling the most rugged parts of the trail with a lighter pack. You will be able to go light in May though Smokies weather is unpredictable. There has been snow recorded every month of the year, but in May cold spells are generally short lived. My first traverse of the park was southbound and I allowed close to a week and it was fun!I carried too much stuff even being March. I’d suggest carrying only an emergency shelter to save weight as you should find room in the lean-tos. I suggest checking out Cammerer lookout, Mt. Leconte, Gregory Bald, and shuckstack firetower. Awesome! Also, we may meet up! I plan to be out there in mid may to give my third and hopefully final shot at the 24-hour traverse or as Grizzly Adams calls it, the GSMNP challenge. Hope you have more fun than me.
Sweeper