GlassJaw
Hero
This is a great idea! I wish I had suggested it.If you are really pressed for prep time, I suggest running the AL Season 5 tier one adventures in order. They are very easy to prep, and imo they are actually more enjoyable and WAY more user-friendly than Storm King's Thunder:
DDAL5-02 The Black Road
DDAL5-03 Uninvited Guests
DDAL5-06 Beneath the Fetid Chelimber
DDAL5-07 Chelimber's Descent
DDAL5-10 Giant Diplomacy
DDAL5-12 Bad Business in Parnast
DDAL5-16 Parnast Under Siege
Those 7 adventures form an episodic story. Black Road, Uninvited Guests, and Giant Diplomacy are the highlights.
I started brainstorming on a "wastelands" campaign using this arc (they are easily removed from FR). I was going to start with Sunless Citadel but I assume your players are familiar with that. You could start with another low-level adventure to get them into the desert if you don't want to start them there right off the bat.
Some warning: 06 and 07 need some work (especially 06,) and you can even skip them entirely or replace them with something else. But the Black Road is a good starting point and would give you time to prep for what's to come.