Forgive me because indie the exam a while ago. From what I recall EOL stands for Effective Operational Length. You are correct in saying for a takeoff chart calculation you would use the least of the three since this is worst case.
Forecast wind conditions are disregarded for take off calcs, in saying that I think if you have the "ambient" conditions you can use it in your calcs. Remeber ambient conditions means the prevailing temp, pressure and wind conditions in the 15mins prior to takeoff.
For the last one, if you exceed ramp weight, ie. The absolute max weight before taxi out to the runway, the aircraft cannot be moved PERIOD. If your trip fuel ends up exceeding your BRW it means that the ZFW must be reduced to allow for the extra fuel. Remember if the trip fuel exceeds 25850kg payload will need to be reduced so as not to exceed MBRW.
Hope this helps
Rocket