Make sure to ask the players what they want. I gave my players a survey before we started playing. It helped me to know what they wanted in a game and what they didn't. Some of their responses surprised me, and I adjusted the game to meet their preferences.
The one shot adventure is a good idea. Especially starting out this can take a lot of the pressure off of you to create everything. Then ask them what they liked and what they didn't.
I see many GM "problem" posts here that boil down to the GM wanting to run one type of game, and the players wanting to play another. Having shared goals and expectations is key to everyone's enjoyment.
Some people enjoy the immersion aspects of the game (tracking food, encumberance, sleep), and others want to avoid bookkeeping.
Some want really serious role-playing, and others are goofy and bounce between in character and out of character frequently.
Some want to have richly detailed histories and character development, others don't bother to name characters and just want to hack monsters.
Clarify expectations (yours and theirs)at the beginning and revisit them occasionally. This will serve you well!