You are in LA at the moment, I assume flying. Why if you have 50 hours do you think it will be another couple of months? I will be totally honest, if you have been in LA doing your PPL and you have so far flown 50 hours but your instructor thinks it will be another couple of months so say another 10-20 hours if you just fly at the weekends, I would not be surprised if you don't make it through again. Of course go for it, you almost have a PPL but flying is not for everyone and if it is going to take you 60-70 hours to get a PPL I would say doing it professionally is not for you. Not trying to be mean but this is exactly what CX will be thinking, why did it take you 70 hours to get a PPL?