Maybe, you'd have to take into account that of those states, only Florida and South Carolina have Republican governors that are ultimately in control of the redistricting (although each state has its own rules and the legislatures matters here). Net +2 D is a reasonable prediction.
In any case, if we follow the more recent historical model, Puerto Rico's single observer in the House would become its Representative (and face a biannual reelection) until the nationwide reapportionment occurs following 2020. So obviously the priority list is going to be jumbled around a bit due to varying growth rates and internal migration.
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