It took Shang a couple of seconds to decide.
Especially the ultimate reward interested him.
Even if Shang decided on a different Path than being a Magic Warrior, having a far greater Mana storage for his mind would help.
He could use several more Shocks, and he would also be able to use Mana Step several times.
He could still focus on another Path while taking the ultimate reward just to boost his Battle-Strength.
Even more, this increase of Battle-Strength would follow him forever.
Yet, there were two reasons that made him decide not to take the ultimate reward.
First, Shang would need to focus on Magic until it was on the same level as his swordsmanship. While Shang knew that he was very talented when it came to physical fighting, he actually had no idea how good he was at understanding Magic.
All of that essentially boiled down to time.