Time Warner Cable, a unit of Time Warner Inc., has selected four Florida neighborhoods to receive its Full Service Network.The unit said Wekiva, Lake Brantley, Sweetwater and Spring Valley were selected because of their “demographic characteristics and educational systems.” TW said the initial phase will be completed by the end of the year. The Full Service Network will provide various interactive information, entertainment and communication services. Last January, TW chairman Gerald Levin said the company had selected the Orlando area, the second-largest franchise after New York City. The service will initially be available to 4,000 residents. The total pricetag for converting the TW cable system could run as high as $ 5 billion. A portion of that is now being underwritten by U S West, the telco that recently joined the partnership controlling Time Warner’s cable operations.