For most of the items you posted, Delaware fits the bill fairly good, however, it still gets cold there in winter. There is no Utopia. The next best would be Florida's west coast. The housing is less expensive, the climiate (other than hurricane season) is warm most of the year, cost of living is somewhat lower than most states, but there are lots of folks that will perform for little or no money, thus making a living as a OMB there can be a challenge.

Good luck on your decission,

Gary