According to what I've read on the internet, P's tend to be very indecisive. However, I don't think this necessary correlates to that, but instead I think you have to look at the reason that you are indecisive. Do you like keeping your options open or are you just trying to be sure you have made a good decision?
Based on your rejection of Si earlier, I'd be a bit tempted to call you some kind of ISP if you are indeed a sensor.
I agree that you should make a video though. ESFP's and ISTJ's are VERY different.