Thanks! I just did the transaction and it went pretty smoothly, with the agent booking the space (in A class indeed) while I transferred the miles. The only thing is that I got a voicemail a few minutes after I hung up indicating that the connecting intra-island flight would be a separate 7.5k miles, which seems to be wrong based on your experience. We'll see what happens once the "offline team" goes to reissue the ticket.