Glad to see you are questioning your beliefs - everyone should, all the time. The questions you have asked though are very high level and specific. If you are questioning your beliefs you should try to get to the foundation of the issue. Study epistemology: examine questions like 'what is truth?', 'how do I determine what is true?', 'do I care whether I believe false things or true things?'. Study logic, critical thinking, common logical fallacies and common apologetics. Survey philosophical schools of thought from the last 3000 years. Hard work but if you approach with an honest open mind and don't cherry pick what you read it can do you nothing but good, no matter what you end up believing.
Indoctrination is disgusting, especially when it comes to concepts like hell. Do you fear the hells of all religions or just the one you were indoctrinated in?
You know, a tour through hell might be interesting. After all, you can take a cruise to Antarctica. Cruising through Hell would be a way to figure out a lot of these questions.
I don't know what it would cost or where one would sign up, but it would certainly be interesting.