1 use the 5V for all of my sensors on the board. (currently only 2 but maybe in future) and 3.3 for the ESP-01.
I was using ESP-12 at first but after some trouble i decided to choose ESP-01. did’t noticed that version doesn’t have Analog input so thats just a stupid mistake that i made 
Are there no options to sent analog data through ESP-01?
What is the main difference between 01 and 12 in this case?