The setup of the battle includes the following rules...
1. Sorcerer and Wizard both finish a long rest at 6am and wake.
2. Each can spend as many or as little spell slots/points or delay as they want before they leave camp (which can be any time after 6am).
3. The Sorcerer is going to be headed North along a road knowing that at some point that day they will encounter the wizard.
4. The Wizard, similarly, will be breaking camp and heading South along the same road knowing they will at some point encounter the Sorcerer.
5. If you do not encounter and battle the enemy by Midnight that day, then the battle is a DRAW.
6. The distance between the two will be determined secretly by myself, which will determine when the two parties encounter each other.
7. Any rules interpretations "up to the GM" will be decided by myself.
I can already tell you that these interpretations are going to be important.
1. [House Rule] You may only short rest two times in between each long rest.
2. [GM Interpretation] If a target succeeds or fails their save versus a harmful effect, they will know something tried to affect them. They may or may not know the origin, or the actual spell cast depending on the circumstances.
3. [GM Interpretation] Hostile actions trigger initiative. If you are determined to be "surprised" the rules from the PHB/DMG are in effect.
4. [GM Style] I am not using Sage Advice. I am GMing from the books only.
5. [GM Style] I reserve the right to append extra requirements for posting your character, extra set-up conditions, and extra rulings as things develop. If you are going to do something that involves "creative" use of the rules then it would be wise to ask how I would rule before assuming it will work the way you think it should before you try it. If you try to do something that obviously wouldn't work because of my interpretation I will tell you that your character would know that it wouldn't work and let you change your action.
6. Parts of the game will be double blind (up until we roll initiative) but from that point we can play out on the forums in public.