The author had planned for Da Li to break through long ago. It had been mentioned many times in the story from dozens of chapters earlier, but it was postponed because the Regent King warned that there was danger. Even knowing the risks, though, given Da Li's personality, there was no way he would choose to retreat without even trying once.
As for Da Li's feelings on the matter, rereading Chapter 1358 should make it clear. Back then, Da Li had stated it plainly: he would not retreat without trying, or else he would never know the true extent of it. The Regent King said he would give him an opportunity, but Da Li said he did not need one—he wanted to try for himself. This was simply a matter of his strong personality. With courage and the confidence of a powerhouse, he could not possibly refuse to try just because he knew there was danger. That would not be Da Li. Instead, with his resurrection cheat as a foundation, he made further preparations and tried again. That could not be called impulsiveness. Being impulsive would mean returning and advancing without any preparation at all. His Cultivation Points were sufficient, so why did he not simply advance at any time?
So please do not judge Da Li's choice as wrong from a reader's omniscient perspective. You could learn more information through the narration and make the decision to avoid it based on your own personality, but Da Li could not. Even knowing there was danger, he would still try. That was the path a powerhouse had to take. Chapter 1358 had already established that both Du Gu and Sect Master Hu had tried. Was Da Li supposed to be too afraid to do so? To know he had the advantage