I should point out that the lie-flats are more advantageous on overnight flights, which is the return leg of any DFW-Hawaii trip. So perhaps PE on the outbound and J on the return is reasonable. On my DFW-HNL rt last year I considered a J connection through LAX or PHX, or PE direct, on the outbound leg, but the return had to be direct in J. FWIW, I wound up choosing DFW-HNL in PE and wait-listing for a SWU, which I did get.