1: There is no specific answer. You are in EP, so play the same as you would if UTG folded, taking the rest of the table dynamics in to consideration.
2. Not enough info. Your position, players still to act and the player type who are involved in the hand. If you have no idea how to proceed if you call, folding is definitely not wrong.
3. Limping J9o generally a bad play. Limp folding is just spewing chips.
4. Sorry, what? No offence, but I dont know what yo are asking here.
As to the rest of your questions, there is simply not enough info about Villain(s), relative stacks etc. to really say.