Johar,
Maybe you've been watching too much Final Destination lately ... and I am truly sorry to hear about your friend(s). However, I do commend you on your pre-purchase research (clapclap), as you would be shocked at the number of idiots that came into the store and bought an animal.....unbeleiveable!!! At any rate, the first step in the right direction is to make sure you have a pair...If your snake is unsexed, find that out and get a mate for him/her, then work on "growing them up". Your time frame of 2-3 years is a great start . Good luck and if you have any questions, feel free......for my door is always open...