FEMA has been reclassifying the zones to get more people onto madatory flood insurance. The program is broke beyond belief.
1) Fight the reclassification. Get a LOMA. Do what it takes.
2) It is not cheap. Even the Zone A is expensive becuase there used to be a "discount rate." Not anymore.
3) Yes, it hurts resale value.
4) Once you are clear, then look into insurance if you are still concerned.
5) Flood insurance doesn't cover crap INSIDE the house, just the house.
I sucessfully fought and got a LOMA at my old house. Thanks to 1) my 84 year old neighbor who had all the elevation maps going back to before any of the land was developed in the 1800's, 2) a neighbor who was an architech and new all the ins-and-outs of what the impact of all the construction over the years, and 3) the county office that did all the paperwork and was happy to generate it for FEMA approval.
Only cost me about $50 to copy drawings and time spent. Saved me $2500 a year.