First: Verify the dealer's set up procedure. Make sure he spends at least 3 to 4 hours on assembly and set up/service. A proper set up will obviate all your concerns. I own Vince's Motorcycle Store in Olympia, Wa.You can call me at 360-754-4900 and I'll go over what should be addressed at the PDI. Second: With the bike you will get an owner's manual. I tell all my customers to give that manual to their wife/mother/sister/significant other/random 9 year old child. Have this person read the manual to you, then follow the instructions. Third: Ride it and have fun. Right now you are at the nervous first-date-coming -up stage. You are worrying way too much. These really are a reliable mount with minimal maintenance needs. On this forum you can get spooked by the problems described, but in reality this is from a VERY small sample of the thousands of Enfield riders here in the states, let alone world wide.
But what fun is that?