Hi cruz..it's understandable that you are a bit worried or anxious. Remember that only a relatively small percentage of wisdom tooth extractions result in nerve damage. It sounds like your wisdom tooth is not impacted so I think the procedure should be pretty straightforward for an experienced dentist. Is your wisdom tooth on the bottom or the top?
There are some preventative things you can do. Make sure your dentist/oral surgeon is qualified and well experienced in doing wisdom tooth extractions. Make sure he/she answers any questions that you might have and openly discusses with you any risks involved with the procedure. Ask him/her about how they plan to assist and provide care to you during your post surgery recovery if there happen to be complications. I really wish I would have asked this before my surgery. I would have also insisted on a followup appointment one week after my extraction.
I think that the recovery after a 'normal' uncomplicated wisdom tooth extraction is pretty quick...there will be probably be some pain and swelling of your face but that should be minimized within 4 or 5 days. Your dentist will probably prescribe antibiotics and painkillers for you to take. Infections and dry sockets can occur but likely won't if you follow the instructions faithfully for post-care that your dentist/OS will give you.
As far as getting all your wisdom teeth out, please do some more research and/or get a second opinion on whether that is necessary or not before you make that decision. If you are older, like me, then the chances of complications unfortunately increases. I'm glad I got my one wisdom tooth out...but I am personally happy to keep the rest where they are for now.
What kind of anaesthesia will you be having? If it's a local anaesthetic you will be awake through the procedure. I had a general anaesthetic so I can describe what that was like for me if you'd like...