What are my chances of virginal birth after cs and vbac?

Patient: Hi, my name is Chy. I had my 1st child by cs after almost 12 hours of labor. My 2nd was VBAC. I am about 19weeks pregnant right now and would like to know my chances of having another successful virginal birth or should I just opt for elective cs so that I don’t go through hours of labor in vain. Thank you