I feed F/T - Its very easy and takes no time at all (small group of snakes) - Place it in a container, add warm water, wait, then feed.
Mine do everything in their tubs.
No, there is nothing definitive. Overall, ball pythons have a really good disposition and males are smaller.
Make sure you can acquire one with a complete setup.
This one point here can start a thread all on its own. To keep it simple, pick one out that appeals and with proper husbandry it will thrive.
Best of luck...