SQL editions can give you tough times, especially when you have used enterprise edition and later you find you cannot downgrade it to standard edition. Often times this is core requirement from the customer once they renew their Microsoft licenses.
Only edition flexible enough to be downgraded as well as upgraded is the developer edition which works for six months without any issues.
Once this period elapses you have chance to either upgrade to enterprise edition or downgrade the solution.
It will save you lot of wasted deployment hours.