Congratulation for the offer!
If the offer is good, if you like the offer, if you do not have any other offer, then sign your name on the offer. Fill the start date as the date you plan to start. Mail the offer back.
As you said, the offer is "At Will". The company can let you go at anytime, in the same token, you can say bye to the company whenever as you like.
If you find a better job from now on, feel free to go.
After get the first offer, the second one you get should be in higher salary then the first one.
If the offer is good, if you like the offer, if you do not have any other offer, then sign your name on the offer. Fill the start date as the date you plan to start. Mail the offer back.
As you said, the offer is "At Will". The company can let you go at anytime, in the same token, you can say bye to the company whenever as you like.
If you find a better job from now on, feel free to go.
After get the first offer, the second one you get should be in higher salary then the first one.