The plant will get knocked over. I'd take it out or put it in a low pot that is wider that it's tall(and heavy). It'll probably get rooted in and destroyed after a while (it's just something to hide in or crawl on to the snake).
I've had good luck with using tupper ware type containers for hiding spots. Just cut a hole in the lid big enough for the snake to crawl into it. Most snakes like a small hide, meaning that they can touch all sides of it when they curl up in there. A snake will squeeze into a hide that's too small and avoid one that is too roomy, go with small.
As far as the feeding, try feeding at night by just putting the prey in the cage and leaving them alone. It may be too nervous to eat while you watch with the lights on.
For handling, some wild caught snakes adapt to captivity and make great pets, some don't. I've had a few that really did everything they could to excape, including rubbing their noses on the mesh lid of the tank till they injured themselves. Young snakes tend to be more defensive than aggressive. The little critter is just afraid you're going to eat it so it's trying to convince you that it'll put up a fight. Once you've got it eating regularly, handle it gently and be prepared for some squirming, biting, and possible musking. They're usually at their most defensive in the cage when you're reaching down for them. If you gently cover the head with a paper towel and then lift the middle, they don't see you coming and it sometimes goes easier. Try to resist the urge to fling the snake if it bites, it can be pretty startling(no really, it sounds funny but sad things happen sometimes). A juvenile rat snake wont do more that put a few scratches on you. Continue to hold it till it calms down (10-15 minutes) and then put it back in the cage. Keep this up and the snake will get used to it, though it may never really appreciate your company. Some people use gloves while they're going through this process, but with a little snake you have nothing to worry about. Good luck with the snake, and post a pic if you get the chance!
Lora